Zone Forecast Product
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
081 FPUS55 KBOU 182040 ZFPBOU Zone Forecast Product for Northeast Colorado National Weather Service Denver/Boulder CO 240 PM MDT Thu Sep 18 2025 COZ038-191200- Larimer County Below 6000 Feet/Northwest Weld County- Including Fort Collins, Hereford, Loveland, and Nunn 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the 40s. .FRIDAY...Mostly sunny. Highs near 80. .FRIDAY NIGHT...Mostly cloudy. Lows near 50. .SATURDAY...Mostly cloudy. Highs near 80. .SATURDAY NIGHT...Partly cloudy. Lows near 50. .SUNDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs near 80. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. .MONDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs 70 to 76. Chance of rain 30 percent. .MONDAY NIGHT...Mostly clear with a 20 percent chance of showers. Lows in the lower to mid 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 69 to 77. Lows 41 to 47. .THURSDAY...Mostly sunny. Highs near 80. $$ COZ039-191200- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- Including Arvada, Boulder, Golden, Lakewood, and Longmont 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the mid to upper 40s. .FRIDAY...Partly cloudy. Highs in the lower 80s. .FRIDAY NIGHT...Mostly cloudy. Lows in the lower to mid 50s. .SATURDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs near 80. .SATURDAY NIGHT...Partly cloudy. Lows in the lower to mid 50s. .SUNDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs near 80. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. .MONDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs in the mid 70s. Chance of rain 30 percent. .MONDAY NIGHT...Mostly clear with a 20 percent chance of showers. Lows in the 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs in the 70s. Lows 44 to 50. .THURSDAY...Partly cloudy. Highs in the lower 80s. $$ COZ040-191200- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows near 50. .FRIDAY...Partly cloudy. Highs near 80. .FRIDAY NIGHT...Mostly cloudy. Lows in the lower 50s. .SATURDAY...Partly cloudy. Highs in the lower 80s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 50s. .SUNDAY...Mostly sunny. Highs in the lower to mid 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the lower to mid 50s. .MONDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the mid 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 71 to 77. Lows 45 to 51. .THURSDAY...Mostly sunny. Highs in the lower 80s. $$ COZ041-191200- Elbert/Central and East Douglas Counties Above 6000 Feet- Including Castle Rock, Elbert, Fondis, Kiowa, and Larkspur 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the mid to upper 40s. South winds 10 to 15 mph with gusts up to 20 mph after midnight. .FRIDAY...Partly cloudy. Highs in the mid 70s to lower 80s. .FRIDAY NIGHT...Mostly cloudy. Lows near 50. .SATURDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows near 50. .SUNDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows near 50. .MONDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs in the lower to mid 70s. Chance of rain 30 percent. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the lower to mid 40s. .TUESDAY...Mostly sunny with a 10 percent chance of showers. Highs in the mid 60s to lower 70s. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 42 to 49. Highs in the lower to mid 70s. .THURSDAY...Mostly sunny. Highs in the mid 70s to lower 80s. $$ COZ043-191200- Central and South Weld County- Including Eaton, Fort Lupton, Greeley, and Roggen 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the 40s. .FRIDAY...Mostly sunny. Highs in the lower 80s. .FRIDAY NIGHT...Mostly cloudy. Lows near 50. .SATURDAY...Partly cloudy. Highs in the lower 80s. .SATURDAY NIGHT...Partly cloudy. Lows 47 to 53. .SUNDAY...Mostly sunny. Highs in the mid 80s. .SUNDAY NIGHT...Partly cloudy. Lows near 50. .MONDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the upper 70s. .MONDAY NIGHT...Mostly clear with a 20 percent chance of showers. Lows in the lower to mid 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs in the mid to upper 70s. Lows 41 to 47. .THURSDAY...Mostly sunny. Highs in the lower 80s. $$ COZ042-191200- Northeast Weld County- Including Briggsdale, Grover, Pawnee Buttes, Raymer, and Stoneham 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the 40s. .FRIDAY...Mostly sunny. Highs near 80. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50. East winds 10 to 15 mph with gusts up to 20 mph in the evening, becoming light. .SATURDAY...Mostly cloudy. Highs near 80. .SATURDAY NIGHT...Partly cloudy. Lows 48 to 54. .SUNDAY...Mostly sunny. Highs in the lower to mid 80s. .SUNDAY NIGHT...Partly cloudy. Lows 50 to 56. .MONDAY AND MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the 70s. Lows in the lower to mid 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 70 to 77. Lows 41 to 47. .THURSDAY...Mostly sunny. Highs near 80. $$ COZ044-191200- Morgan County- Including Brush, Fort Morgan, Goodrich, and Wiggins 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the mid to upper 40s. .FRIDAY...Mostly sunny. Highs in the lower 80s. .FRIDAY NIGHT...Mostly cloudy. Lows near 50. East winds 10 to 15 mph in the evening, becoming light. .SATURDAY...Partly cloudy. Highs in the lower 80s. .SATURDAY NIGHT...Partly cloudy. Lows near 50. .SUNDAY...Mostly sunny. Highs in the mid 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. .MONDAY AND MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the upper 70s. Lows in the lower to mid 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs in the 70s. Lows 43 to 48. .THURSDAY...Mostly sunny. Highs in the lower 80s. $$ COZ045-191200- Central and East Adams and Arapahoe Counties- Including Bennett, Byers, Deer Trail, and Leader 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows around 50. South winds 10 to 15 mph with gusts up to 20 mph after midnight. .FRIDAY...Mostly sunny. Highs around 80. Southwest winds 10 to 15 mph in the morning, becoming light. .FRIDAY NIGHT...Mostly cloudy. Lows in the lower 50s. .SATURDAY...Partly cloudy. Highs in the lower 80s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. .SUNDAY...Mostly sunny. Highs in the lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. .MONDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the mid 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs in the lower to mid 70s. Lows in the mid to upper 40s. .THURSDAY...Mostly sunny. Highs in the lower 80s. $$ COZ048-191200- Logan County- Including Crook, Merino, Sterling, and Peetz 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs near 80. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50. .SATURDAY...Mostly cloudy. Highs 76 to 82. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. .SUNDAY...Mostly sunny. Highs in the lower to mid 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s. .MONDAY AND MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the 70s. Lows in the mid 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 69 to 77. Lows in the mid to upper 40s. .THURSDAY...Mostly sunny. Highs near 80. $$ COZ049-191200- Washington County- Including Akron, Cope, Last Chance, and Otis 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows around 50. South winds 10 to 15 mph with gusts up to 20 mph after midnight. .FRIDAY...Mostly sunny. Highs in the lower 80s. Southwest winds 10 to 15 mph with gusts up to 20 mph, becoming north in the afternoon. .FRIDAY NIGHT...Mostly cloudy. Lows in the lower 50s. .SATURDAY...Partly cloudy. Highs in the lower 80s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 50s. .SUNDAY...Mostly sunny. Highs in the mid 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s. .MONDAY AND MONDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s. Lows in the mid 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 70 to 76. Lows in the mid to upper 40s. .THURSDAY...Mostly sunny. Highs in the upper 70s. $$ COZ050-191200- Sedgwick County- Including Julesburg, Ovid, and Sedgwick 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50. .SATURDAY...Mostly cloudy. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers. Lows in the lower 50s. .SUNDAY...Mostly sunny. Highs in the lower 80s. .SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the upper 40s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs in the lower to mid 70s. Lows in the mid 40s. .THURSDAY...Mostly sunny. Highs in the upper 70s. $$ COZ051-191200- Phillips County- Including Amherst, Haxtun, and Holyoke 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. .SATURDAY...Mostly cloudy. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers. Lows in the lower 50s. .SUNDAY...Mostly sunny. Highs in the mid 80s. .SUNDAY NIGHT AND MONDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the upper 40s. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs around 70. Lows in the mid 40s. .WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs in the mid to upper 70s. Lows in the upper 40s. $$ COZ046-191200- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Including Agate, Hugo, Limon, and Matheson 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the mid 40s to lower 50s. South winds 10 to 15 mph after midnight. .FRIDAY...Mostly sunny. Highs in the upper 70s. Southwest winds 10 to 15 mph with gusts up to 20 mph in the morning, becoming light. .FRIDAY NIGHT...Mostly cloudy. Lows in the lower to mid 50s. .SATURDAY...Partly cloudy. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower to mid 50s. .SUNDAY...Mostly sunny. Highs in the lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. .MONDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid 70s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the lower to mid 40s. .TUESDAY...Mostly sunny with a 10 percent chance of showers. Highs around 70. .TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 44 to 49. Highs in the lower 70s. .THURSDAY...Mostly sunny. Highs in the mid 70s to lower 80s. $$ COZ047-191200- Southeast Elbert County Below 6000 Feet/South Lincoln County- Including Forder, Karval, Kutch, and Punkin Center 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows in the upper 40s. .FRIDAY...Mostly sunny. Highs in the upper 70s. .FRIDAY NIGHT...Mostly cloudy. Lows in the lower to mid 50s. .SATURDAY...Partly cloudy. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. .SUNDAY...Mostly sunny. Highs in the lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s. .MONDAY...Partly cloudy with a 10 percent chance of showers. Highs in the mid 70s to lower 80s. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the 40s. .TUESDAY THROUGH THURSDAY...Mostly clear. Highs 69 to 77. Lows in the mid 40s. $$ COZ035-191200- Larimer and Boulder Counties Between 6000 and 9000 Feet- Including Estes Park, Glendevey, Nederland, and Red Feather Lakes 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows 38 to 48. .FRIDAY...Partly cloudy. Highs 67 to 77. .FRIDAY NIGHT...Mostly cloudy. Lows 43 to 53. .SATURDAY...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Highs 65 to 75. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 43 to 53. .SUNDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 65 to 75. .SUNDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 43 to 53. .MONDAY...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Highs 59 to 69. Chance of rain 40 percent. .MONDAY NIGHT...Mostly clear with a 20 percent chance of rain showers. Colder. Lows 34 to 44. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 62 to 72. Lows 38 to 48. .THURSDAY...Partly cloudy. Highs 66 to 76. $$ COZ036-191200- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows 39 to 49. .FRIDAY...Mostly sunny in the morning, then becoming mostly cloudy. Highs 68 to 78. .FRIDAY NIGHT...Mostly cloudy. Lows 43 to 53. .SATURDAY...Mostly cloudy with a chance of showers and slight chance of thunderstorms. Highs 66 to 76. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy. Lows 43 to 53. .SUNDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 67 to 77. .SUNDAY NIGHT...Partly cloudy. Lows 42 to 52. .MONDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs 63 to 73. Chance of rain 40 percent. .MONDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 36 to 46. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 62 to 72. Lows 39 to 49. .THURSDAY...Partly cloudy. Highs 68 to 78. $$ COZ030-191200- Jackson County Below 9000 Feet- Including Gould, North Park, Rand, Spicer, and Walden 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows 26 to 34. .FRIDAY...Mostly sunny in the morning, then becoming mostly cloudy. Highs 66 to 72. West winds 10 to 15 mph with gusts up to 25 mph in the afternoon. .FRIDAY NIGHT...Mostly cloudy. Lows 33 to 41. .SATURDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Highs 64 to 70. West winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 32 to 40. .SUNDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 62 to 68. .SUNDAY NIGHT...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 31 to 39. Chance of rain 30 percent. .MONDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs near 60. .MONDAY NIGHT...Mostly clear with a 10 percent chance of rain showers. Lows 25 to 31. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs in the lower to mid 60s. Lows 26 to 34. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs near 70. Lows 29 to 37. .THURSDAY...Partly cloudy. Highs near 70. $$ COZ032-191200- Grand and Summit Counties Below 9000 Feet- Including Dillon, Fraser, Granby, Grand Lake, Hot Sulphur Springs, and Kremmling 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows 29 to 37. .FRIDAY...Partly cloudy in the morning, then becoming mostly cloudy. Highs 65 to 71. .FRIDAY NIGHT...Mostly cloudy. Lows 35 to 43. .SATURDAY...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Highs 63 to 69. Chance of rain 30 percent. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 34 to 42. .SUNDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 61 to 67. .SUNDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 34 to 42. .MONDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 57 to 63. .MONDAY NIGHT THROUGH TUESDAY NIGHT...Mostly clear. Lows 28 to 37. Highs 59 to 67. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 65 to 73. Lows 32 to 40. .THURSDAY...Partly cloudy. Highs 65 to 71. $$ COZ037-191200- Central and Southeast Park County- Including Fairplay, Hartsel, Lake George, and South Park 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows 33 to 39. .FRIDAY...Partly cloudy in the morning, then becoming mostly cloudy. Highs 62 to 70. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows 38 to 44. .SATURDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs 61 to 69. .SATURDAY NIGHT...Partly cloudy with a 10 percent chance of showers. Lows 37 to 43. .SUNDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 61 to 69. .SUNDAY NIGHT...Partly cloudy. Lows 37 to 43. .MONDAY...Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs 58 to 66. Chance of rain 30 percent. .MONDAY NIGHT...Mostly clear with a 20 percent chance of rain showers. Lows in the 30s. .TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 59 to 69. Lows 33 to 40. .THURSDAY...Partly cloudy. Highs 63 to 71. $$ COZ033-191200- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- Including Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, and Willow Creek Pass 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows 29 to 39. .FRIDAY...Mostly sunny in the morning, then becoming mostly cloudy. Highs 55 to 65. .FRIDAY NIGHT...Mostly cloudy. Lows 34 to 44. .SATURDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Highs 52 to 62. West winds 10 to 15 mph with gusts up to 20 mph. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 33 to 43. .SUNDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 51 to 61. .SUNDAY NIGHT...Partly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 33 to 43. Chance of rain 30 percent. .MONDAY...Mostly cloudy with a chance of thunderstorms and slight chance of snow showers. Highs 46 to 56. Chance of snow 50 percent. .MONDAY NIGHT...Mostly clear with a slight chance of rain and snow showers. Lows 26 to 36. Chance of precipitation 20 percent. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs 49 to 59. Lows 28 to 38. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 55 to 65. Lows 31 to 41. .THURSDAY...Partly cloudy. Highs 55 to 65. $$ COZ034-191200- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Including Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Blue Sky, Williams Fork Mountains, and Winter Park 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows 30 to 40. .FRIDAY...Partly cloudy in the morning, then becoming mostly cloudy. Highs 54 to 64. .FRIDAY NIGHT...Mostly cloudy. Lows 34 to 44. .SATURDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 52 to 62. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 32 to 42. .SUNDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs 51 to 61. .SUNDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 32 to 42. .MONDAY...Mostly cloudy with a chance of thunderstorms and snow showers. Highs 48 to 58. Chance of snow 40 percent. .MONDAY NIGHT...Mostly clear with a slight chance of rain and snow showers. Lows 28 to 36. Chance of precipitation 20 percent. .TUESDAY AND TUESDAY NIGHT...Mostly clear. Highs 49 to 59. Lows 30 to 38. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 54 to 64. Lows 31 to 41. .THURSDAY...Partly cloudy. Highs 54 to 64. $$ COZ031-191200- West Jackson and West Grand Counties Above 9000 Feet- Including Mt Zirkel 240 PM MDT Thu Sep 18 2025 .TONIGHT...Mostly clear. Lows 31 to 39. .FRIDAY...Partly cloudy in the morning, then becoming mostly cloudy. Highs 58 to 68. West winds 10 to 15 mph with gusts up to 20 mph in the afternoon. .FRIDAY NIGHT...Mostly cloudy. Lows 37 to 45. .SATURDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Highs 55 to 65. West winds 10 to 15 mph with gusts up to 25 mph. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 35 to 43. .SUNDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs 53 to 63. .SUNDAY NIGHT...Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows 35 to 41. Chance of rain 30 percent. .MONDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Highs 49 to 59. .MONDAY NIGHT THROUGH TUESDAY NIGHT...Mostly clear. Lows 28 to 37. Highs 53 to 63. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 59 to 69. Lows 35 to 41. .THURSDAY...Partly cloudy. Highs 57 to 67. $$