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Windsor, Ontario Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Windsor, Ontario?
Windsor, Ontario gets 759 mm of precipitation a year over about 124 rainy days. July is the warmest month (average high 29°C) and January the coldest (average low -6°C).
Humid continental climate
Windsor, Ontario has warm summers and cold winters. Daytime highs range from about 1°C in January to 29°C in July. May is usually the wettest month, and snow falls in winter. The most comfortable time to visit is typically June and September, when daytime highs sit near 25°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -5° | 2° |
| Spring | Mar–May | 4° | 14° |
| Summer | Jun–Aug | 18° | 28° |
| Autumn | Sep–Nov | 8° | 17° |
How much rain does Windsor get?
Windsor gets 759 mm of precipitation in an average year, spread over about 124 days with measurable rain. That is more rainy days than 81% of the US.
May is the wettest month, with 89 mm. February is the driest, with 36 mm. May has the most rainy days, about 14.
The longest dry spell in the last five years lasted 35 days, to November 5, 2024.
From October 2025 to September 2026 Windsor got 737 mm of rain, against a normal of 759 mm for those months. July 2026 had the most, with 103 mm.
Does it snow in Windsor?
The snowiest winter on record is 1974–75, with 131 cm.
The most recent measurable snow at the station fell on April 6, 2026.
From October 2025 to September 2026 the station measured 100 cm of snow. January 2026 had the most, with 43 cm.
Windsor weather by month
Windsor weather in January
In January, Windsor averages a high of 1°C and a low of -6°C. It gets 37 mm of precipitation over about 10 rainy days. Estimated sunshine is 20% of daylight hours, derived from ERA5 cloud cover. The January record high is 17°C (2008) and the record low is -27°C (1994).
Windsor weather in February
In February, Windsor averages a high of 2°C and a low of -6°C. It gets 36 mm of precipitation over about 8 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The February record high is 23°C (2024) and the record low is -23°C (2015).
Windsor weather in March
In March, Windsor averages a high of 8°C and a low of -2°C. It gets 51 mm of precipitation over about 10 rainy days. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. The March record high is 28°C (2012) and the record low is -19°C (2003).
Windsor weather in April
In April, Windsor averages a high of 14°C and a low of 4°C. It gets 72 mm of precipitation over about 12 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The April record high is 32°C (1990) and the record low is -8°C (1982).
Windsor weather in May
In May, Windsor averages a high of 21°C and a low of 10°C. It gets 89 mm of precipitation over about 14 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The May record high is 34°C (2018) and the record low is -1°C (1978).
Windsor weather in June
In June, Windsor averages a high of 27°C and a low of 16°C. It gets 79 mm of precipitation over about 10 rainy days. Estimated sunshine is 49% of daylight hours, derived from ERA5 cloud cover. The June record high is 39°C (1988) and the record low is 5°C (1988). June is one of the most comfortable months to visit.
Windsor weather in July
In July, Windsor averages a high of 29°C and a low of 19°C. It gets 82 mm of precipitation over about 10 rainy days. Estimated sunshine is 50% of daylight hours, derived from ERA5 cloud cover. The July record high is 39°C (1995) and the record low is 6°C (1972).
Windsor weather in August
In August, Windsor averages a high of 28°C and a low of 18°C. It gets 79 mm of precipitation over about 10 rainy days. Estimated sunshine is 51% of daylight hours, derived from ERA5 cloud cover. The August record high is 39°C (2001) and the record low is 8°C (1986).
Windsor weather in September
In September, Windsor averages a high of 24°C and a low of 14°C. It gets 78 mm of precipitation over about 9 rainy days. Estimated sunshine is 51% of daylight hours, derived from ERA5 cloud cover. The September record high is 37°C (2011) and the record low is 1°C (2000). September is one of the most comfortable months to visit.
Windsor weather in October
In October, Windsor averages a high of 17°C and a low of 7°C. It gets 58 mm of precipitation over about 11 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The October record high is 32°C (2007) and the record low is -4°C (1972).
Windsor weather in November
In November, Windsor averages a high of 9°C and a low of 2°C. It gets 55 mm of precipitation over about 10 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The November record high is 24°C (2024) and the record low is -13°C (2019).
Windsor weather in December
In December, Windsor averages a high of 3°C and a low of -3°C. It gets 44 mm of precipitation over about 10 rainy days. Estimated sunshine is 21% of daylight hours, derived from ERA5 cloud cover. The December record high is 21°C (1998) and the record low is -21°C (1983).
Sunshine, humidity and wind in Windsor
August is the sunniest month in Windsor, with estimated sunshine of 51% of daylight hours from ERA5 cloud cover. January is the cloudiest, at 20%. The annual cloud-cover estimate is 39% of daylight hours; it is not a measurement of sunshine duration. Windsor is cloudier than 90% of the US.
Humidity peaks in January at 76% and is lowest in June at 63%.
Wind averages 14 km/h over the year, and January is the windiest month at 16 km/h.
Windsor has about 14 days a year above 32°C. Windsor is cooler than 71% of the US.
Thunderstorms occur on about 26 days a year.
First and last freeze in Windsor
The first fall freeze in Windsor typically comes around October 30, and the last spring freeze around April 20. That leaves a frost-free growing season of about 193 days.
Windsor weather records
These records cover DETROIT CITY AP during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Windsor station is 39°C, on June 25, 1988. The coldest is -27°C, on January 19, 1994.
The wettest day in the available station history brought 103 mm of precipitation, on September 29, 2016.
39 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.3°C per decade since 1970.
The best time to visit Windsor
The most comfortable time to visit is typically June and September, when daytime highs sit near 25°C.
Winter (December–February) is cold, with average highs around 2°C and lows near -5°C. Snow is possible.
Spring (March–May) is mild, with average highs around 14°C and lows near 4°C.
Summer (June–August) is warm, with average highs around 28°C and lows near 18°C.
Autumn (September–November) is mild, with average highs around 16°C and lows near 8°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Wind | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|---|
| January | -6° | 1° | 37 mm | 10 | 16 km/h | 76% | 20% | 17° | -27° |
| February | -6° | 2° | 36 mm | 8 | 15 km/h | 70% | 33% | 23° | -23° |
| March | -2° | 8° | 51 mm | 10 | 15 km/h | 67% | 34% | 28° | -19° |
| April | 4° | 14° | 72 mm | 12 | 16 km/h | 65% | 37% | 32° | -8° |
| May | 10° | 21° | 89 mm | 14 | 14 km/h | 64% | 40% | 34° | -1° |
| June | 16° | 27° | 79 mm | 10 | 12 km/h | 63% | 49% | 39° | 5° |
| July | 19° | 29° | 82 mm | 10 | 12 km/h | 69% | 50% | 39° | 6° |
| August | 18° | 28° | 79 mm | 10 | 11 km/h | 71% | 51% | 39° | 8° |
| September | 14° | 24° | 78 mm | 9 | 11 km/h | 72% | 51% | 37° | 1° |
| October | 7° | 17° | 58 mm | 11 | 13 km/h | 70% | 43% | 32° | -4° |
| November | 2° | 9° | 55 mm | 10 | 14 km/h | 69% | 41% | 24° | -13° |
| December | -3° | 3° | 44 mm | 10 | 15 km/h | 76% | 21% | 21° | -21° |
Station: DETROIT CITY AP, 12 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Windsor climate questions
How much rain does Windsor get?
Windsor gets 759 mm of precipitation in an average year, over about 124 rainy days.
What is the wettest month in Windsor?
May is the wettest month in Windsor, with 89 mm. February is the driest, with 36 mm.
How many rainy days does Windsor have a year?
Windsor has about 124 days with measurable rain in an average year. May has the most, about 14.
What is the hottest month in Windsor?
July is the warmest month in Windsor, with an average high of 29°C.
What is the coldest month in Windsor?
January is the coldest month in Windsor, with an average low of -6°C.
What is the record high temperature in Windsor?
Within the available 1970–2026 station history, the record high at the Windsor station is 39°C, set on June 25, 1988. The record low is -27°C, on January 19, 1994.
What is the sunniest month in Windsor?
August is the sunniest month in Windsor, with estimated sunshine of 51% of daylight hours from ERA5 cloud cover. January is the cloudiest.
When is the first frost in Windsor?
The first fall freeze in Windsor typically comes around October 30. The last spring freeze is around April 20.
What is the best time to visit Windsor?
The most comfortable time to visit is typically June and September, when daytime highs sit near 25°C.