


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
650 FNUS56 KSTO 220731 FWFSTO Fire Weather Planning Forecast for Interior Northern California National Weather Service Sacramento CA 1230 AM PDT TUE JUL 22 2025 NOTE: THIS PRODUCT HAS UPDATED FORECAST DATA BUT THE FORECAST DISCUSSION IS FROM THE PREVIOUS DAY. .DISCUSSION... A pattern shift toward cooler temperatures, periodically breezy onshore influenced winds, and improving humidity recovery is expected through the week ahead. Strongest winds through Monday evening. Isolated mountain shower and thunderstorm potential increases this week as well, with highest chances from Tuesday onward. CAZ213-230000- Eastern Portion of Shasta-Trinity NF- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Sunny. * Max Temperature........82-87 lower elevations...except 73-82 higher elevations. * 24 HR Trend..........Little change. * Min Humidity...........30-36 percent. * 24 HR Trend..........8 percent down. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming south 5 to 10 mph in the afternoon. * Ridges/Upr Slopes....South winds 4 to 9 mph. * CWR....................0 percent. * Mixing Height..........5400 ft AGL. * Chance of thunder......3 percent. .TONIGHT... * Sky/Weather............Clear. * Min Temperature........57-62 lower elevations...except 48-58 higher elevations. * 24 HR Trend..........Little change. * Max Humidity...........66-81 percent. * 24 HR Trend..........6 percent down. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds up to 7 mph in the evening becoming drainage up to 5 mph. * Ridges/Upr Slopes....South winds 4 to 9 mph in the evening becoming variable up to 5 mph. * CWR....................0 percent. * Mixing Height..........900 ft AGL. * Chance of thunder......2 percent. .WEDNESDAY... * Sky/Weather............Sunny. * Max Temperature........86-91 lower elevations...except 77-85 higher elevations. * Min Humidity...........23-38 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming south up to 8 mph in the afternoon. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming south 4 to 9 mph in the afternoon. * Mixing Height..........5200 ft AGL. * CWR....................0 percent. * Chance of thunder......2 percent. $$ CAZ214-230000- Burney Basin and Northeast Plateau in Shasta County Including Northwest Lassen NF north of Lassen NP- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Mostly sunny. * Max Temperature........79-84 lower elevations...except 73-78 higher elevations. * 24 HR Trend..........Little change. * Min Humidity...........32-39 percent. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west 5 to 11 mph in the afternoon. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming west 5 to 11 mph in the afternoon. * CWR....................0 percent. * Mixing Height..........6900 ft AGL. * Chance of thunder......3 percent. .TONIGHT... * Sky/Weather............Mostly clear. * Min Temperature........48-53 lower elevations...except 43-52 higher elevations. * 24 HR Trend..........Little change. * Max Humidity...........77-92 percent. * 24 HR Trend..........4 percent down. * 20-Foot Winds.......... * Valleys/Lwr Slopes...West winds 4 to 9 mph with local gusts up to 20 mph in the evening becoming drainage up to 5 mph. * Ridges/Upr Slopes....West winds 4 to 9 mph with local gusts up to 20 mph in the evening becoming variable up to 5 mph. * CWR....................0 percent. * Mixing Height..........1100 ft AGL. * Chance of thunder......3 percent. .WEDNESDAY... * Sky/Weather............Sunny. * Max Temperature........83-88 lower elevations...except 76-82 higher elevations. * Min Humidity...........27-40 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming west up to 8 mph in the afternoon. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming west up to 8 mph in the afternoon. * Mixing Height..........7100 ft AGL. * CWR....................0 percent. * Chance of thunder......4 percent. $$ CAZ215-230000- Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Mostly sunny. * Max Temperature........83-90. * 24 HR Trend..........Little change. * Min Humidity...........30-43 percent. * 24 HR Trend..........4 percent down. * 20-Foot Winds..........South winds 4 to 10 mph. * CWR....................0 percent. * Mixing Height..........4900 ft AGL. * Chance of thunder......0 percent. .TONIGHT... * Sky/Weather............Mostly clear. * Min Temperature........58-63. * 24 HR Trend..........Little change. * Max Humidity...........72-87 percent. * 24 HR Trend..........Little change. * 20-Foot Winds..........Southeast winds up to 8 mph. Local gusts up to 20 mph in the evening. * CWR....................0 percent. * Mixing Height..........900 ft AGL. * Chance of thunder......0 percent. .WEDNESDAY... * Sky/Weather............Sunny. * Max Temperature........87-94. * Min Humidity...........29-44 percent. * 20-Foot Winds..........Variable winds less than 5 mph becoming south 4 to 9 mph in the afternoon. * Mixing Height..........5100 ft AGL. * CWR....................0 percent. * Chance of thunder......0 percent. $$ CAZ216-230000- Central Sacramento Valley in Glenn, Colusa, Yuba, Northern Sutter, and Butte County Below 1000 Ft- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Partly cloudy in the morning then clearing. * Max Temperature........79-84. * 24 HR Trend..........4 degrees cooler. * Min Humidity...........45-60 percent. * 24 HR Trend..........4 percent up. * 20-Foot Winds..........Southeast winds 5 to 11 mph. Local gusts up to 20 mph in the afternoon. * CWR....................0 percent. * Mixing Height..........3800 ft AGL. * Chance of thunder......0 percent. .TONIGHT... * Sky/Weather............Mostly clear. * Min Temperature........55-60. * 24 HR Trend..........Little change. * Max Humidity...........85-100 percent. * 24 HR Trend..........Little change. * 20-Foot Winds..........Southeast winds up to 8 mph. * CWR....................0 percent. * Mixing Height..........500 ft AGL. * Chance of thunder......1 percent. .WEDNESDAY... * Sky/Weather............Mostly sunny. * Max Temperature........82-87. * Min Humidity...........38-53 percent. * 20-Foot Winds..........Southeast winds up to 8 mph. * Mixing Height..........4200 ft AGL. * CWR....................0 percent. * Chance of thunder......0 percent. $$ CAZ217-230000- Southern Sacramento Valley in Yolo- Sacramento Far Western Placer, southern Sutter and Solano County Below 1000 Ft- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Mostly cloudy in the morning then becoming partly cloudy. * Max Temperature........77-82. * 24 HR Trend..........4 degrees cooler. * Min Humidity...........44-53 percent. * 24 HR Trend..........4 percent up. * 20-Foot Winds..........South winds 6 to 12 mph with local gusts up to 20 mph. * CWR....................0 percent. * Mixing Height..........3900 ft AGL. * Chance of thunder......1 percent. .TONIGHT... * Sky/Weather............Mostly cloudy in the evening then clearing. * Min Temperature........53-58. * 24 HR Trend..........Little change. * Max Humidity...........87-98 percent. * 24 HR Trend..........Little change. * 20-Foot Winds..........South winds 5 to 11 mph with local gusts up to 20 mph. * CWR....................0 percent. * Mixing Height..........700 ft AGL. * Chance of thunder......1 percent. .WEDNESDAY... * Sky/Weather............Partly cloudy early in the morning then clearing. * Max Temperature........81-86. * Min Humidity...........37-52 percent. * 20-Foot Winds..........South winds 4 to 9 mph. * Mixing Height..........3900 ft AGL. * CWR....................0 percent. * Chance of thunder......0 percent. $$ CAZ218-230000- Carquinez Strait and Delta- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Mostly cloudy. * Max Temperature........72-78. * 24 HR Trend..........Little change. * Min Humidity...........52-61 percent. * 24 HR Trend..........Little change. * 20-Foot Winds..........West winds 10 to 16 mph with local gusts up to 30 mph. * CWR....................0 percent. * Mixing Height..........3200 ft AGL. * Chance of thunder......1 percent. .TONIGHT... * Sky/Weather............Mostly cloudy in the evening then becoming partly cloudy. * Min Temperature........55-60. * 24 HR Trend..........Little change. * Max Humidity...........88-93 percent. * 24 HR Trend..........Little change. * 20-Foot Winds..........West winds 9 to 15 mph with local gusts up to 25 mph. * CWR....................0 percent. * Mixing Height..........1100 ft AGL. * Chance of thunder......1 percent. .WEDNESDAY... * Sky/Weather............Partly cloudy early in the morning then clearing. * Max Temperature........73-81. * Min Humidity...........58-73 percent. * 20-Foot Winds..........West winds 7 to 13 mph with local gusts up to 25 mph. * Mixing Height..........2900 ft AGL. * CWR....................0 percent. * Chance of thunder......0 percent. $$ CAZ219-230000- Northern San Joaquin Valley in San Joaquin and Stanislaus Counties Below 1000 ft- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Partly cloudy. * Max Temperature........79-84. * 24 HR Trend..........4 degrees cooler. * Min Humidity...........39-51 percent. * 24 HR Trend..........4 percent up. * 20-Foot Winds..........Northwest winds 6 to 12 mph. Local gusts up to 20 mph in the afternoon. * CWR....................0 percent. * Mixing Height..........4200 ft AGL. * Chance of thunder......0 percent. .TONIGHT... * Sky/Weather............Partly cloudy. * Min Temperature........54-59. * 24 HR Trend..........Little change. * Max Humidity...........87-99 percent. * 24 HR Trend..........Little change. * 20-Foot Winds..........Northwest winds 6 to 12 mph. * CWR....................0 percent. * Mixing Height..........800 ft AGL. * Chance of thunder......0 percent. .WEDNESDAY... * Sky/Weather............Mostly sunny. * Max Temperature........81-86. * Min Humidity...........34-49 percent. * 20-Foot Winds..........Northwest winds 4 to 9 mph. * Mixing Height..........4000 ft AGL. * CWR....................0 percent. * Chance of thunder......0 percent. $$ CAZ263-279-230000- Southeast Edge Shasta-Trinity NF and Western Portions of Tehama- Glenn Unit-Eastern Mendocino NF- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Mostly sunny. * Max Temperature........81-86 lower elevations...except 66-76 higher elevations. * 24 HR Trend..........Little change. * Min Humidity...........32-38 percent lower elevations...except 37-52 percent high elevations. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...East winds 4 to 10 mph. * Ridges/Upr Slopes....East winds 4 to 10 mph. * CWR....................0 percent. * Mixing Height..........4500 ft AGL. * Chance of thunder......1 percent. .TONIGHT... * Sky/Weather............Mostly clear. * Min Temperature........60-65 lower elevations...except 51-57 higher elevations. * 24 HR Trend..........Little change. * Max Humidity...........64-75 percent. * 24 HR Trend..........6 percent down. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southeast winds up to 8 mph in the evening becoming drainage up to 5 mph. * Ridges/Upr Slopes....Southeast winds up to 8 mph in the evening becoming variable up to 5 mph. * CWR....................0 percent. * Mixing Height..........900 ft AGL. * Chance of thunder......1 percent. .WEDNESDAY... * Sky/Weather............Mostly sunny. * Max Temperature........85-90 lower elevations...except 69-79 higher elevations. * Min Humidity...........25-38 percent lower elevations...except 34-49 percent high elevations. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southeast 4 to 9 mph in the afternoon. * Ridges/Upr Slopes....East winds 4 to 10 mph. * Mixing Height..........4900 ft AGL. * CWR....................0 percent. * Chance of thunder......1 percent. $$ CAZ266-230000- Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions of Shasta-Trinity and Butte Units- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Mostly sunny. * Max Temperature........78-84 lower elevations...except 73-81 higher elevations. * 24 HR Trend..........Little change. * Min Humidity...........34-47 percent. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southwest winds 4 to 10 mph. * Ridges/Upr Slopes....Southwest winds 4 to 10 mph. * CWR....................0 percent. * Mixing Height..........4200 ft AGL. * Chance of thunder......0 percent. .TONIGHT... * Sky/Weather............Mostly clear. * Min Temperature........55-61. * 24 HR Trend..........Little change. * Max Humidity...........65-80 percent. * 24 HR Trend..........6 percent down. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 4 to 9 mph with local gusts up to 20 mph in the evening becoming drainage up to 5 mph. * Ridges/Upr Slopes....South winds up to 8 mph with local gusts up to 20 mph in the evening becoming variable up to 5 mph. * CWR....................0 percent. * Mixing Height..........800 ft AGL. * Chance of thunder......0 percent. .WEDNESDAY... * Sky/Weather............Mostly sunny. * Max Temperature........81-87 lower elevations...except 76-84 higher elevations. * Min Humidity...........36-51 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest up to 8 mph in the afternoon. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming southwest up to 8 mph in the afternoon. * Mixing Height..........4400 ft AGL. * CWR....................0 percent. * Chance of thunder......1 percent. $$ CAZ220-267-230000- Southern Motherlode From 1000 to 3000 Ft. Includes portions of Toulumne-Calaveras Unit- Northern Motherlode From 1000 to 3000 Ft. Includes portions of Nevada-Yuba-Placer-Amador and Eldorado Units- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Partly cloudy in the morning then becoming mostly cloudy. * Max Temperature........74-82. * 24 HR Trend..........4 degrees cooler. * Min Humidity...........36-47 percent. * 24 HR Trend..........5 percent up. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest up to 8 mph in the afternoon. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming southwest up to 8 mph in the afternoon. * CWR....................0 percent. * Mixing Height..........3800 ft AGL. * Chance of thunder......1 percent. .TONIGHT... * Sky/Weather............Partly cloudy. * Min Temperature........53-58. * 24 HR Trend..........Little change. * Max Humidity...........78-93 percent. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southwest winds up to 8 mph shifting to the northeast up to 7 mph after midnight. * Ridges/Upr Slopes....Southwest winds up to 8 mph shifting to the east up to 7 mph after midnight. * CWR....................0 percent. * Mixing Height..........600 ft AGL. * Chance of thunder......0 percent. .WEDNESDAY... * Sky/Weather............Mostly sunny. * Max Temperature........77-85. * Min Humidity...........30-45 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest up to 8 mph in the afternoon. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming southwest up to 8 mph in the afternoon. * Mixing Height..........4300 ft AGL. * CWR....................0 percent. * Chance of thunder......1 percent. $$ CAZ268-230000- Northern Sierra Including Lassen NP and Plumas and Lassen NF/S West of the Sierra Crest (West of Evans Peak-Grizzly Peak- Beckworth Peak)- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Mostly sunny. * Max Temperature........70-78 lower elevations...except 64-72 higher elevations. * 24 HR Trend..........Little change. * Min Humidity...........32-47 percent. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...South winds 5 to 11 mph. * Ridges/Upr Slopes....Southwest winds 5 to 11 mph. * CWR....................0 percent. * Mixing Height..........5000 ft AGL. * Chance of thunder......3 percent. .TONIGHT... * Sky/Weather............Mostly clear. * Min Temperature........43-55. * 24 HR Trend..........Little change. * Max Humidity...........66-81 percent...except 81-96 percent in the high mountain valleys. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southwest winds up to 8 mph in the evening becoming drainage up to 5 mph. * Ridges/Upr Slopes....Southwest winds 4 to 9 mph in the evening becoming variable up to 5 mph. * CWR....................0 percent. * Mixing Height..........700 ft AGL. * Chance of thunder......3 percent. .WEDNESDAY... * Sky/Weather............Mostly sunny. * Max Temperature........73-81 lower elevations...except 67-75 higher elevations. * Min Humidity...........35-50 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest up to 8 mph in the afternoon. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming southwest 4 to 9 mph in the afternoon. * Mixing Height..........5300 ft AGL. * CWR....................0 percent. * Chance of thunder......4 percent. $$ CAZ221-269-230000- Stanislaus NF West of the Sierra Crest- Northern Sierra Including the Tahoe and Eldorado NF/S West of the Sierra Crest- 1230 AM PDT Tue Jul 22 2025 .TODAY... * Sky/Weather............Mostly sunny in the morning then becoming partly cloudy. * Max Temperature........72-78 lower elevations...except 62-72 higher elevations. * 24 HR Trend..........Little change. * Min Humidity...........34-46 percent. * 24 HR Trend..........6 percent up. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southwest winds 5 to 11 mph. * Ridges/Upr Slopes....Southwest winds 5 to 11 mph. * CWR....................0 percent. * Mixing Height..........4100 ft AGL. * Chance of thunder......4 percent. .TONIGHT... * Sky/Weather............Partly cloudy. * Min Temperature........52-58 lower elevations...except 42-52 higher elevations. * 24 HR Trend..........Little change. * Max Humidity...........67-82 percent. * 24 HR Trend..........Little change. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Southwest winds up to 7 mph in the evening becoming drainage up to 5 mph. * Ridges/Upr Slopes....Southwest winds 5 to 11 mph in the evening becoming variable up to 5 mph. * CWR....................0 percent. * Mixing Height..........500 ft AGL. * Chance of thunder......1 percent. .WEDNESDAY... * Sky/Weather............Mostly sunny. At higher elevations, a slight chance of showers early in the afternoon. A slight chance of showers and thunderstorms late in the afternoon. * Max Temperature........73-79 lower elevations...except 63-73 higher elevations. * Min Humidity...........41-56 percent. * 20-Foot Winds.......... * Valleys/Lwr Slopes...Upslope winds up to 5 mph becoming southwest 4 to 9 mph in the afternoon. * Ridges/Upr Slopes....Variable winds up to 7 mph becoming west 4 to 10 mph in the afternoon. * Mixing Height..........4800 ft AGL. * CWR....................0 percent. * Chance of thunder......8 percent. $$ .Extended... ...Shasta County Mountains and Coastal Range .WEDNESDAY NIGHT...Mostly clear. Lows 51 to 60. Southwest winds up to 13 mph. .THURSDAY...Partly cloudy with a slight chance of showers. Highs 73 to 83. South winds up to 10 mph. .THURSDAY NIGHT...Mostly clear. Lows 51 to 60. West winds up to 10 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Highs 73 to 83. Southeast winds up to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 50 to 58. Southwest winds up to 10 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Highs 71 to 80. South winds up to 10 mph. .SATURDAY NIGHT...Mostly clear. Lows 49 to 59. West winds up to 10 mph. ...Northern Sierra and Lassen Park .WEDNESDAY NIGHT...Mostly clear. Lows 48 to 58. South winds up to 10 mph. .THURSDAY...Partly cloudy with a slight chance of showers. Highs 73 to 82. Southwest winds up to 10 mph. .THURSDAY NIGHT...Mostly clear. Lows 48 to 58. East winds up to 10 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Highs 73 to 81. Variable less than 5 mph. .FRIDAY NIGHT...Mostly clear. Lows 47 to 57. Variable less than 5 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Highs 71 to 79. Southwest winds up to 10 mph. .SATURDAY NIGHT...Clear. Lows 46 to 56. Variable less than 5 mph. ...Sierra Nevada Foothills .WEDNESDAY NIGHT...Mostly clear. Lows 54 to 61. Southeast winds up to 10 mph. .THURSDAY...Mostly sunny. Highs 79 to 85. Southwest winds up to 10 mph. .THURSDAY NIGHT...Mostly clear. Lows 54 to 60. Southeast winds up to 10 mph. .FRIDAY...Sunny. Highs 78 to 84. Variable less than 5 mph. .FRIDAY NIGHT...Clear. Lows 52 to 59. Southeast winds up to 10 mph. .SATURDAY...Mostly sunny. Highs 77 to 83. Southwest winds up to 10 mph. .SATURDAY NIGHT...Clear. Lows 54 to 59. Variable less than 5 mph. ...Central Valley and Delta .WEDNESDAY NIGHT...Mostly clear. Lows 55 to 60. Southwest winds 5 to 15 mph. .THURSDAY...Mostly sunny. Highs 83 to 88. Southwest winds 5 to 15 mph. .THURSDAY NIGHT...Mostly clear. Lows 54 to 59. Southwest winds 5 to 15 mph. .FRIDAY...Sunny. Highs 82 to 87. Southwest winds up to 10 mph. .FRIDAY NIGHT...Clear. Lows 54 to 59. Southwest winds 5 to 15 mph. .SATURDAY...Mostly sunny. Highs 81 to 86. Southwest winds up to 10 mph. .SATURDAY NIGHT...Clear. Lows 53 to 58. Southwest winds up to 10 mph. $$