Windsor climate

Windsor Weather in April

NOAA 1991-2020 normals for Santa Rosa Sonoma CO AP, 4.8 km from Windsor

Average highs run from 67°F on April 1 to 72°F on April 30, and lows from 42°F to 44°F. Normal precipitation for the month is 2.10 in over about 8 wet days.

April day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Windsor, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
69°F
Average low
43°F
Precipitation
2.10 in
Record high
94°FApr 26, 2004
Record low
31°FApr 1, 1999
Chance of a freeze
11%
Days of 90°F or more
0.6
Daylight
12 h 39 min to 13 h 47 min
Cloud cover
48%
Humidity
81%
Dew point
47°F
Wind
8.9 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Apr 167°F42°F84°F 201731°F 199931%0%
Apr 267°F42°F87°F 200035°F 199931%0%
Apr 367°F42°F79°F 202632°F 200331%0%
Apr 467°F43°F82°F 202632°F 200930%0%
Apr 567°F43°F83°F 201632°F 200130%0%
Apr 667°F43°F88°F 201632°F 202030%0%
Apr 768°F43°F90°F 202234°F 200829%0%
Apr 868°F43°F89°F 202232°F 200129%0%
Apr 968°F43°F79°F 202231°F 199929%0%
Apr 1068°F43°F85°F 201335°F 202128%0%
Apr 1168°F43°F85°F 200837°F 200328%0%
Apr 1268°F43°F87°F 200832°F 202227%0%
Apr 1369°F43°F86°F 200834°F 200527%0%
Apr 1469°F43°F87°F 199936°F 200126%0%
Apr 1569°F43°F83°F 199932°F 200126%0%
Apr 1669°F43°F82°F 199933°F 200925%0%
Apr 1769°F43°F84°F 201633°F 201824%0%
Apr 1869°F43°F88°F 202134°F 202224%0%
Apr 1970°F43°F90°F 200934°F 200823%0%
Apr 2070°F43°F93°F 200932°F 200823%0%
Apr 2170°F44°F92°F 200932°F 200822%0%
Apr 2270°F44°F91°F 201336°F 200321%0%
Apr 2370°F44°F93°F 201936°F 200821%0%
Apr 2470°F44°F90°F 202032°F 200820%0%
Apr 2571°F44°F88°F 200437°F 200920%0%
Apr 2671°F44°F94°F 200433°F 202119%0%
Apr 2771°F44°F93°F 200436°F 200319%0%
Apr 2871°F44°F86°F 201334°F 200219%0%
Apr 2971°F44°F92°F 201432°F 200918%0%
Apr 3072°F44°F91°F 201435°F 200918%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Windsor, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

April 1
sunrise 6:56 AM, sunset 7:35 PM
April 30
sunrise 6:15 AM, sunset 8:02 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00023213 (Santa Rosa Sonoma CO AP), public domain. Records: NOAA GHCN-Daily, station USW00023213, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.