Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
Issued by NWS San Joaquin Valley, CA
538 FXUS66 KHNX 151816 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 1116 AM PDT Tue Sep 15 2026 .KEY MESSAGES... 1. Minor Heat Risk over this week. Temperatures will be slightly warmer today before another cooldown midweek. 2. Expect wind gusts to increase up to 35 mph in wind prone areas, such as near the Mojave Desert and mountain slopes Tuesday evening through late Tuesday night. 3. Temperatures warm up a bit this coming weekend. 4. Dry conditions will remain for the next week. && .DISCUSSION... Temperatures today are expected to be slightly warmer than yesterday with the trough that has been influencing our weather weakening slightly. Expect closer to average temperatures today with a 60-75% chance of temperatures above 90 degrees today in the Central Valley. A digging trough will move onto the California coast and influence our weather in the mid to late work week after today. Temperatures will therefore likely cool after today, with comfortable below average conditions through the end of the work week. The probability of temperatures above 90 degrees will be below 40% in the Central Valley from Wednesday through Friday, with Wednesday likely being the warmest of these days. Low temperatures will likely consistently remain in the upper-50s to low-60s in this timeframe. As the trough moves in, it will bring some isolated gusty (up to 35 mph) conditions towards the northern portion of the CWA. As such, a Lake Wind Advisory will be in effect Tuesday evening through late Tuesday night. The usual problem spots too, will be gusty, but not exceeding advisory levels. The probability of wind gusts exceeding 30 mph will be 65-80% along the typical problem spot regions, such as the Mojave Desert and in the far northwestern portion of our CWA where the Lake Wind Advisory has been issued. To round out this week and into early next week, a weak ridge is expected to influence our region. The weekend will be a bit warmer, but nothing too hot for the the end of September. Saturday, temperatures will stay below 95 degrees, as there`s a 10-20% chance for the valley to exceed that threshold, save for a few spots along the I-5 and up near Los Banos/San Luis Reservoir. Sunday, however, looks to be the warmest day. There`s a 25-40% chance for temperatures to exceed 95 degrees on Sunday. By Monday of next week there is a 15-30% chance of temperatures exceeding 95 degrees in the Central Valley, with temperatures likely consistently remaining in the low to mid 90s from the weekend into early next week. Even though that`s a bit warmer than much of this week, the Climate Prediction Center has most of California in a near normal for temperatures in their 6-10 day outlook and again in their 8-10 day outlook. && .AVIATION... VFR conditions prevailing for the next 24 hours with light wind speeds below 10 mph. && AIR QUALITY ISSUES... None. && .CERTAINTY... The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is high. 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... Lake Wind Advisory from 5 PM this afternoon to midnight PDT Wednesday night for CAZ300. && $$ public...MC aviation....MC weather.gov/hanford