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Windsor (CA) Weather and Climate: A Comprehensive Guide

The temperature in Windsor can vary quite a bit throughout the year. Temperatures can be warm during the warmest months, and mild during the cooler months. It maintains moderate precipitation patterns. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

Visitors to Windsor can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a comfortable 29°C in July to a moderate 14°C in the coolest month, December.

Nights are cooler, with lows often dropping to around 3°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Windsor experiences moderate precipitation patterns, averaging 793 mm yearly. The climate in Windsor shows significant variation throughout the year. Expect heavy rainfall in December, with an average of 162 mm of precipitation over 14 rainy days.

In contrast, August offers drier and sunnier days, with around 0.1 mm of rainfall over 0 rainy days. For more details, please visit our Windsor Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Windsor serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 10.3 hours of sunshine daily, and embrace the darker days in December, offering only 5.3 hours of daily sunlight. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Healdsburg, the United States of America (8 KM, 5 Miles).

Daily hours of sunshine

Data from: Healdsburg, the United States of America (8 KM, 5 Miles).

Forecast for Windsor (CA)

Fri   Dec 27
17°C | 11°C
W 3 m/s
1.1 mm
broken clouds and  chance of slight rain

broken clouds and chance of slight rain

Sat   Dec 28
16°C | 11°C
SW 3 m/s
7.9 mm
overcast and heavy rain

overcast and heavy rain

Sun   Dec 29
16°C | 7°C
S 6 m/s
24 mm
partly cloudy and rain

partly cloudy and rain

The best time of year to visit Windsor in the United States of America

During the months of April, May and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Windsor have a dry season?
    Yes, the months of June, July, August and September are very dry.
  • Which is the warmest month in Windsor?
    July has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Windsor?
    The coldest month is December with an average maximum temperature of 14°C.
  • Which is the wettest month in Windsor?
    December tops the wettest month list with 162 mm of rainfall.
  • Which is the driest month in Windsor?
    August is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in Windsor?
    May is the sunniest month with an average of 310 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.