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Cotati, CA Weather
Tonight: Mostly Clear then Patchy Fog, low 40°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).
Cotati, CA current weather
48°F
Mostly Clear
Forecast for this hour. No recent report from a nearby station.
H -- / L 40°
- Coastal Flood Advisory in effect
No rain expected in the next 12 hours
No recent station report. NWS hourly forecast updated 10/27/2026, 11:26 PM PT
1 active alert
From the National Weather Service for this forecast zone or county
Hourly forecast
NWS, updated 10/27/2026, 11:26 PM PT
10-day forecast
Tap a day for details
Today10/27Low 40°High
Tonight: Patchy fog after 1am. Mostly clear, with a low around 40. Northwest wind around 2 mph.
Mostly Clear then Patchy FogWed10/28Low 42°High 70°
Wednesday: Patchy fog before 10am. Mostly sunny. High near 70, with temperatures falling to around 65 in the afternoon. West northwest wind 0 to 7 mph.
Wednesday Night: Areas of fog after 11pm. Mostly cloudy, with a low around 42. Northwest wind 0 to 3 mph.
Patchy Fog then Mostly SunnyThu10/29Low 39°High 67°
Thursday: Areas of fog before 10am. Mostly cloudy, with a high near 67. South wind 0 to 3 mph.
Thursday Night: Areas of fog after 10pm. Mostly cloudy, with a low around 39. West northwest wind 0 to 3 mph.
Areas Of Fog then Mostly CloudyFri10/30Low 38°High 66°
Friday: Areas of fog before 10am. Mostly sunny, with a high near 66.
Friday Night: Patchy fog after 2am. Mostly cloudy, with a low around 38.
Areas Of Fog then Mostly SunnySat10/3110% chance of precipitationLow 38°High 62°
Saturday: Patchy fog before 10am. Partly sunny, with a high near 62.
Saturday Night: Partly cloudy, with a low around 38.
Patchy Fog then Partly SunnySun11/1Low 40°High 68°
Sunday: Patchy frost before 7am. Sunny, with a high near 68.
Sunday Night: Mostly clear, with a low around 40.
Patchy Frost then SunnyMon11/211% chance of precipitationLow 42°High 70°
Monday: Mostly sunny, with a high near 70.
Monday Night: Mostly cloudy, with a low around 42.
Mostly SunnyTue11/328% chance of precipitationLow High 70°
Tuesday: A chance of rain after 10am. Partly sunny, with a high near 70.
Chance Light RainWed11/4Model blend30% chance of precipitationLow 43°High 66°
Wednesday: Mostly cloudy, slight chance of rain. High near 66°. Low that night near 43°. About 0.03 in of precipitation.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Thu11/5Model blend31% chance of precipitationLow 43°High 64°
Thursday: Mostly cloudy, slight chance of rain. High near 64°. Low that night near 43°. About 0.12 in of precipitation.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Forecast for 38.329, -122.716 from the NWS MTR office, updated 10/27/2026, 11:26 PM PT · Official forecast on weather.gov
Days 9 to 10: NOAA National Blend of Models, station KO69 (Petaluma Muni, 8 mi), model run 10/27/2026, 4:00 PM PDT
From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.
Next 6 hours
NWS hourly forecast
- Now48°Mostly Clear0%2 mph
- 12 AM47°Clear0%2 mph
- 1 AM46°Patchy Fog0%2 mph
- 2 AM44°Patchy Fog0%2 mph
- 3 AM43°Patchy Fog0%2 mph
- 4 AM42°Patchy Fog0%2 mph
Hourly details
Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShowHide
NWS hourly forecast updated 10/27/2026, 11:26 PM PT
Radar and satellite
National radarNEXRAD (last 50 min) and GOES
Nearby hazards
California hazardsSevere storm and flash flood outlooks, expected rain, river flooding and wildfires near this area
- Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
- Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
- River gauges within 40 miles at or above flood stage: None reported
- Active wildfires within 50 miles: COOLEY Fire (1,365 acres)
UV and air quality forecast
EPA and AirNow
- AQI forecast today (Santa Rosa)
- 36GoodOzone
- AQI forecast tomorrow (Santa Rosa)
- 37GoodOzone
Drought
By countySonoma County, week of 10/20/2026
No drought or abnormal dryness in this county.
Tides nearby
NOAA tide stations
Beaches nearby
EPA BEACON beaches
Sun and moon
Local time, center of the area
- Sunrise
- 7:32 AM
- Sunset
- 6:17 PM
- Daylight
- 10 hr 45 min
- Moon
- Waning Gibbous 95% lit
- First light (civil dawn)
- 7:05 AM
- Last light (civil dusk)
- 6:44 PM
- Moonrise
- 6:59 PM
- Moonset
- 9:26 AM
Normal October weather
ClimateNormal October high 76°, low 48°, precipitation 1.27 in for the month. 1991 to 2020 normals at Petaluma AP, 8 mi away.
Other places nearby
Data sources
- National Weather Service APINOAA
- National Blend of Models (NBM) text guidanceNOAA National Weather Service
- Convective Outlooks and Storm ReportsNOAA Storm Prediction Center
- Excessive Rainfall Outlook and Quantitative Precipitation ForecastsNOAA Weather Prediction Center
- National Water Prediction ServiceNOAA National Weather Service
- WFIGS Current Wildland Fire IncidentsNational Interagency Fire Center
- UV Index Forecast (Envirofacts)U.S. Environmental Protection Agency and NOAA
- AirNowU.S. Environmental Protection Agency
- NWS HeatRisk (experimental)NOAA National Weather Service
- U.S. Drought MonitorNational Drought Mitigation Center, USDA and NOAA
- BEACON 2.0 Beach Advisory and Closing On-line NotificationU.S. Environmental Protection Agency
- U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information
- Tides & Currents (CO-OPS API)NOAA Center for Operational Oceanographic Products and Services
- NEXRAD radar tilesIowa Environmental Mesonet, Iowa State University
- GOES-East and GOES-West GeoColor imageryNOAA NESDIS Center for Satellite Applications and Research
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Frequently asked questions
- Will it rain in Cotati, CA in the next 24 hours?
- The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
- What is the 10-day forecast for Cotati, CA?
- The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 4 to Nov 5) come from the NOAA National Blend of Models, with highs of 64°F to 66°F and up to a 31% chance of precipitation. Model guidance this far out often changes.
- What time is sunrise and sunset in Cotati, CA today?
- Sunrise is about 7:32 AM PDT and sunset is about 6:17 PM PDT (calculated for the center of the area, within a few minutes).
- What is the normal October weather in Cotati, CA?
- At Petaluma AP, the 1991 to 2020 normal high in October is 76°F and the normal low is 48°F.
About this data
Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.
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