Tillsonburg climate — normals and trends
Tillsonburg (Canada) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 8.7 °C and it receives 1,030 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (22.0 °C on average) and the coldest is January (-4.6 °C). Rainfall peaks in June.
Tillsonburg averages 116 frost days, 2 hot days (≥ 30 °C) and 135 rainy days per year.
Tillsonburg has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 129 to 103 per year over the period.
The hottest day of the period reached 34.0 °C (on 8 July 1988) and the coldest -28.6 °C (on 16 February 2015).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
TillsonburgOntario
- coords
- 42.86°, -80.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
11.9°C
Average daily low
5.4°C
Annual rainfall
1,030mm
Sunshine / day
9.0h
Mean relative humidity
74%
Average peak wind
23.5km/h
Seasonal range
26.6°C
Frost days (< 0 °C)
116 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
135 d/yr
Annual snowfall
95.5 cm
Average feels-like high
9.4 °C
Average feels-like low
1.9 °C
Average peak gust
41.0 km/h
Tropical nights (≥ 20 °C)
25 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.27 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
34.0 °C
8 July 1988
Coldest day
-28.6 °C
16 February 2015
Wettest day
79 mm
15 July 1945
Windiest day
67.8 km/h
26 January 1978
Strongest gust
113.8 km/h
26 January 1978
Hottest feels-like
39.4 °C
17 June 1994
Coldest feels-like
-33.8 °C
17 January 1982
Snowiest day
25.6 cm
5 December 1977
Sunniest day
15.0 h
14 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -2.4 °C | -0.7 °C | 45 mm | -26 mm |
| Feb | -1.4 °C | -0.1 °C | 70 mm | +8 mm |
| Mar | 6.7 °C | +3.5 °C | 96 mm | +13 mm |
| Apr | 10.3 °C | +0.6 °C | 79 mm | -16 mm |
| May | 15.7 °C | -1.3 °C | 108 mm | +17 mm |
| Jun | 23.1 °C | +0.1 °C | 50 mm | -52 mm |
| Jul | 26.5 °C | +1.1 °C | 70 mm | -31 mm |
| Aug | 24.2 °C | -0.3 °C | 42 mm | -50 mm |
| Sep | 22.4 °C | +1.8 °C | 37 mm | -48 mm |
| Oct | 15.8 °C | +1.8 °C | 76 mm | -3 mm |
| Nov | 7.3 °C | 0.0 °C | 67 mm | -21 mm |
| Dec | 1.0 °C | -0.5 °C | 111 mm | +30 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Tillsonburg?
Tillsonburg has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 1,030 mm of precipitation per year.
What is the hottest day ever recorded in Tillsonburg?
The hottest day measured in Tillsonburg between 1940 and 2025 was 8 July 1988, reaching 34.0 °C.
What is the coldest day in Tillsonburg?
The coldest day measured in Tillsonburg between 1940 and 2025 was 16 February 2015, at -28.6 °C.
Does it snow in Tillsonburg?
Yes. Tillsonburg gets on average 95.5 cm of snow per year and has around 116 frost days.
Has the climate of Tillsonburg warmed?
Yes: Tillsonburg warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tillsonburg?
The wettest day measured in Tillsonburg between 1940 and 2025 was 15 July 1945, with 79 mm of rain in 24 hours.
What was the windiest day in Tillsonburg?
The windiest day measured in Tillsonburg between 1940 and 2025 was 26 January 1978, with winds reaching 67.8 km/h.
What is the warmest month in Tillsonburg?
The warmest month in Tillsonburg is July (22.0 °C on average); the coldest is January (-4.6 °C).
How much does it rain in Tillsonburg?
Tillsonburg receives on average 1,030 mm of precipitation per year, spread over about 135 rainy days.
Is it sunny in Tillsonburg?
Tillsonburg gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tillsonburg?
The heaviest 24-hour snowfall measured in Tillsonburg between 1940 and 2025 was 5 December 1977, with 25.6 cm.
Are there tropical nights in Tillsonburg?
Yes: Tillsonburg has on average 25 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tillsonburg?
In Tillsonburg, between 1940 and 2025, the highest apparent temperature reached 39.4 °C on 17 June 1994, and the lowest was -33.8 °C on 17 January 1982.
Compare Tillsonburg with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tillsonburg