Windsor climate
Windsor (Ontario, Canada) has a hot-summer humid continental climate (Köppen Dfa). The average temperature over the year is 9 °C49 °F, and about 848 mm33 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Windsor climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | −130 | −818 | −424 | 522.1 | 29 |
| Feb | 033 | −818 | −425 | 522.1 | 27 |
| Mar | 643 | −326 | 235 | 562.2 | 25 |
| Apr | 1457 | 236 | 846 | 773.0 | 11 |
| May | 2068 | 948 | 1458 | 973.8 | 1 |
| Jun | 2577 | 1458 | 2068 | 843.3 | 0 |
| Jul | 2882 | 1763 | 2373 | 853.3 | 0 |
| Aug | 2781 | 1762 | 2272 | 823.2 | 0 |
| Sep | 2475 | 1355 | 1865 | 742.9 | 0 |
| Oct | 1661 | 643 | 1152 | 722.8 | 1 |
| Nov | 947 | 033 | 440 | 622.5 | 15 |
| Dec | 235 | −424 | −130 | 552.2 | 27 |
| Year | 2882 | −818 | 949 | 84833 | 135 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 87% | 77% | 1.6 | 9:24 |
| Feb | 85% | 72% | 2.4 | 10:30 |
| Mar | 79% | 68% | 3.5 | 11:48 |
| Apr | 75% | 64% | 4.7 | 13:19 |
| May | 76% | 64% | 5.4 | 14:34 |
| Jun | 76% | 56% | 6.2 | 15:15 |
| Jul | 74% | 50% | 6.2 | 14:59 |
| Aug | 73% | 49% | 5.3 | 13:53 |
| Sep | 75% | 49% | 4.3 | 12:25 |
| Oct | 78% | 63% | 2.8 | 10:58 |
| Nov | 82% | 69% | 1.8 | 9:43 |
| Dec | 86% | 79% | 1.2 | 9:06 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Windsor is like
The warmest month is July, with an average high of 28 °C82 °F and a low of 17 °C63 °F. The coldest is January, when highs average −1 °C30 °F and lows −8 °C18 °F. Seasons are strongly marked: the warmest month is on average 27.1 °C48.8 °F warmer than the coldest.
Annual precipitation is moderate at about 848 mm33 in. Rain is spread fairly evenly through the year. The wettest month is May (97 mm3.8 in), the driest is February (52 mm2.1 in).
Relative humidity ranges from 73% in August to 87% in January. The clearest skies (lowest average cloud amount, 49%) are typical of September. Average wind speed near the ground ranges from 9 km/h (5 mph) in July to 15 km/h (10 mph) in January. Daylight lasts from about 9.1 hours in December to 15.3 hours in June.
A lasting snow cover is typical in December–March, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 17 cm).
Best time to visit Windsor
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 24 °C75 °F to 28 °C82 °F with 74 mm2.9 in to 85 mm3.3 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of −1 °C30 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Windsor
- Winter (December–February) — highs −130 to 2 °C35 °F, lows −818 to −4 °C24 °F, about 53 mm2.1 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 643 to 20 °C68 °F, lows −326 to 9 °C48 °F, about 77 mm3.0 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2577 to 28 °C82 °F, lows 1458 to 17 °C63 °F, about 83 mm3.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 947 to 24 °C75 °F, lows 033 to 13 °C55 °F, about 69 mm2.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Windsor compares
Compared with Toledo, about 84 km to the southwest, Windsor is on average 1 °C1.8 °F cooler and receives 6% less precipitation (848 mm33 in vs 906 mm36 in). The difference is largest in April (1.6 °C2.9 °F cooler).
Of the 40 places in Canada covered by World Climates, Windsor is the 9th warmest by annual mean temperature and the 19th wettest by annual precipitation. See all of them on the Canada climate page.
Places in other countries with the most similar temperature and rainfall pattern: Lansing (United States, Dfa), Ann Arbor (United States, Dfa) and Rochester (United States, Dfa).
The same NASA POWER grid cell also contains Detroit (pop. 645,705), Warren (pop. 134,056) and Sterling Heights (pop. 132,052). Their long-term averages in this dataset are essentially the same as for Windsor, so they do not have separate pages.
Nearby places
- Ann Arbor 60 km · 9 °C48 °F · 878 mm35 in
- Toledo 84 km · 10 °C51 °F · 906 mm36 in
- Lansing 135 km · 9 °C48 °F · 885 mm35 in
- Cleveland 141 km · 11 °C51 °F · 936 mm37 in
- London 164 km · 9 °C48 °F · 660 mm26 in
- Akron 184 km · 10 °C50 °F · 995 mm39 in
- Fort Wayne 218 km · 10 °C51 °F · 966 mm38 in
- Grand Rapids 229 km · 9 °C48 °F · 967 mm38 in
Frequently asked questions
What is the warmest month in Windsor?
July is the warmest month in Windsor, with an average high of 28 °C (82 °F) and an average low of 17 °C (63 °F).
What is the coldest month in Windsor?
January is the coldest month, with an average high of -1 °C (30 °F) and an average low of -8 °C (18 °F).
When does it rain the most in Windsor?
May is the wettest month with about 97 mm (3.8 in) of precipitation; February is the driest with about 52 mm (2.1 in).
What is the best time to visit Windsor?
Judging by long-term averages, the most comfortable months are June–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.