Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
Issued by NWS San Joaquin Valley, CA
808 FXUS66 KHNX 281745 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 1045 AM PDT Sat Jun 28 2025 && .KEY MESSAGES... 1. Steady triple digit high temperatures are expected through at least Thursday in the Valley and Desert. A possible cooling trend is being model indicated by Friday and next weekend. 2. Dryness is expected to continue through the next week with steady minimum RH`s in the 15 to 25 percent range in the Valley and in the single digits for the Desert. Light winds will keep fire risk low. && .DISCUSSION... As a weak upper level ridge over the southern CONUS is expected to keep high temperatures a few degrees above triple digits through at least Thursday of next week. Along with these temperatures are minimum relative humidities in the Valley of 15 to 25 percent and single digits in the Desert through much of the week. The ridge will also keep winds calm and therefore reduce the risk for fires. A cooling trend is possible late next week with a trough appearing in the models by Thursday, causing temperatures to lower slightly by then, and cooling further by Friday and next weekend. This trough may lead to increased winds and a slight increase to the minimum RH`s in the afternoon in some locations in the Valley. && .AVIATION... 18Z Update: VFR conditions will prevail for the next 24 hours across the Central California Interior. && .AIR QUALITY ISSUES... None. && .CERTAINTY... The level of certainty for days 1 and 2 is medium. The level of certainty for days 3 through 7 is medium. Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.html for additional information and/or to provide feedback. && .HNX WATCHES/WARNINGS/ADVISORIES... None. && $$ Public/Aviation/Fire Weather...EW DSS/PIO........................CM weather.gov/hanford