Caltrans District 3 maintains the state highway system in 11 Northern California counties. Check https://xitter.cf/t.co/y6nSOWP2j8 for 24/7 highway conditions.
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ALT Chance of snow > 2 inches Friday-Sunday, best chances over the highest peaks south of I-80
ALT Chance of rain > 0.10 inches Saturday-Sunday, best chances over the mountains south of I-80
ALT 6-10 day precipitation outlook favoring above normal precipitation for October 31-November 4
ALT 6-10 day temperature outlook favoring below normal temperatures for October 31-November 4
ALT Driving Safely in the Rain. Use lights and wipers. Reduce speed on wet pavement. Watch for ponding of water on roads. Plan for Delays. Plan ahead! Visit quickmap.dot.ca.gov for current conditions. 1-800-427-7623
ALT When thunder roars, go indoors! Lightning safety. Move to safe shelter. Stay away from trees or tall objects. Stay away from water. Avoid the top of a hill & open fields.
ALT Forecast rainfall across interior NorCal from Tuesday, October 20 through Thursday, October 22. Rainfall totals of 0.5 to 1 inch are forecast across the Sierra, with totals around 0.1 to 0.5 inches forecast for the remainder Valley and foothills locations.
ALT Graphic showing the Storm Prediction Center general thunderstorm outlook for interior NorCal on Wednesday, October 21. As unsettled weather continues, a 10 to 20 percent chance for isolated thunderstorms is expected throughout the day and into the evening on Wednesday.
ALT Probability of snowfall greater than 2" from Wednesday, October 21 through Thursday, October 22. Probabilities remain around 50 to 80 percent, generally above 8000 feet.
ALT A Red Flag Warning remains in effect through 10 am Friday for the Sierra and adjacent foothills as gusty downslope east-northeast winds, low humidity, and very poor overnight humidity recovery continue.
ALT Critical fire weather conditions are expected today Oct 15 - Friday Oct. 16th, 2026 in the Sierra Nevada and adjacent foothills. Gusty north to east winds and low humidity values are the primary concerns. Gusts of 25 to 45 mph, daytime humidity values in the low teens to 20s with single digits possible. Image on the left of the graphic shows a helicopter over a wildfire, with the Weather Risk Matrix highlighting Orange (Moderate) for risks.
ALT Hot Temperatures. Timing: Through 10 PM Thursday, October 8, 2026. Temperatures: Delta, Valley, & foothills - Highs: 92 to 101, Lows: mid 60s to low 70s. Impacts and precautions: Increased risk of heat stress or illness to people or animals. Stay hydrated. Reduce time in the sun between 10am and 7pm. Stay in a cool place during the heat of the day. Map on the left shows much of northern California covered by a Heat Advisory, represented by orange coloring.
ALT With seasonably warm temperatures expected over the next several days, Moderate HeatRisk is anticipated across the foothills. Moderate HeatRisk means that this level of heat affects most individuals, especially those without effective cooling or adequate hydration.
ALT With seasonably warm temperatures expected over the next several days, Moderate HeatRisk and isolated areas of Major HeatRisk are anticipated across much of the Delta, Valley, and foothills. Moderate to Major HeatRisk means that this level of heat affects most individuals, especially those without effective cooling or adequate hydration.
ALT Table with forecasted high temperatures at various locations around the Valley, Delta, and foothills. Highest temperatures are around 100 in the Valley and Delta, and continue to be in the high 90s through Friday. Saturday and Sunday see cooling into the 80s and high 70s. Text reads: Additional Details. Potential Impacts: Unseasonably hot temperatures continue this week. Widespread Moderate HeatRisk Today-Thursday. Cooling trend by the weekend. What to do: Monitor the forecast at weather.gov/sacramento. Stay cool and hydrated. Check on those more susceptible to the heat.
ALT Table with forecasted probabilities for high temperatures greater than 100 degrees Fahrenheit at various locations around the Valley, Delta, and foothills. Highest probabilities in the northern Sacramento Valley and Delta on Tuesday, around 35 to 65 percent. Chances basically 0% by Sunday. Text reads: Additional Details. Potential Impacts: Unseasonably hot temperatures continue this week. Widespread Moderate HeatRisk Today-Thursday. Cooling trend by the weekend. What to do: Monitor the forecast at weather.gov/sacramento. Stay cool and hydrated. Check on those more susceptible to the heat.
ALT A Heat Advisory is in effect 11 AM Saturday - 10 PM Monday, October 3-5, 2026 for the Delta, southern Sacramento Valley, northern San Joaquin Valley, and adjacent foothills. Please remember to hydrate and practice heat safety!
