Dixon climate — normals and trends
Dixon (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.6 °C and it receives 923 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 (23.2 °C on average) and the coldest is January (-6.1 °C). Rainfall peaks in May.
Dixon averages 124 frost days, 26 hot days (≥ 30 °C) and 112 rainy days per year.
Dixon has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 135 to 113 per year over the period.
The hottest day of the period reached 38.1 °C (on 17 August 1988) and the coldest -35.7 °C (on 3 February 1996).
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
DixonIllinois
- coords
- 41.84°, -89.48°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.6°C
Average daily high
14.5°C
Average daily low
4.9°C
Annual rainfall
923mm
Sunshine / day
8.7h
Mean relative humidity
71%
Average peak wind
20.2km/h
Seasonal range
29.3°C
Frost days (< 0 °C)
124 d/yr
Hot days (≥ 30 °C)
26 d/yr
Rainy days (≥ 1 mm)
112 d/yr
Annual snowfall
68.9 cm
Average feels-like high
12.4 °C
Average feels-like low
1.9 °C
Average peak gust
38.4 km/h
Tropical nights (≥ 20 °C)
26 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
38.1 °C
17 August 1988
Coldest day
-35.7 °C
3 February 1996
Wettest day
85 mm
25 June 2021
Windiest day
54.9 km/h
6 April 1997
Strongest gust
102.6 km/h
16 December 2021
Hottest feels-like
43.5 °C
13 July 1995
Coldest feels-like
-41.6 °C
3 February 1996
Snowiest day
25.1 cm
15 December 1987
Sunniest day
14.4 h
20 June 2003
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 | -1.3 °C | +0.8 °C | 40 mm | -7 mm |
| Feb | 0.7 °C | +0.2 °C | 18 mm | -25 mm |
| Mar | 12.9 °C | +5.4 °C | 113 mm | +39 mm |
| Apr | 16.4 °C | +1.2 °C | 90 mm | -13 mm |
| May | 21.6 °C | +0.4 °C | 82 mm | -24 mm |
| Jun | 29.0 °C | +2.7 °C | 88 mm | -15 mm |
| Jul | 29.5 °C | +1.4 °C | 132 mm | +46 mm |
| Aug | 27.0 °C | -0.2 °C | 96 mm | +14 mm |
| Sep | 26.9 °C | +3.3 °C | 38 mm | -47 mm |
| Oct | 20.1 °C | +3.1 °C | 43 mm | -32 mm |
| Nov | 9.8 °C | +1.6 °C | 55 mm | -8 mm |
| Dec | 0.3 °C | -0.6 °C | 59 mm | +5 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 Dixon?
Dixon has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.6 °C and it receives 923 mm of precipitation per year.
What is the hottest day ever recorded in Dixon?
The hottest day measured in Dixon between 1940 and 2025 was 17 August 1988, reaching 38.1 °C.
What is the coldest day in Dixon?
The coldest day measured in Dixon between 1940 and 2025 was 3 February 1996, at -35.7 °C.
Does it snow in Dixon?
Yes. Dixon gets on average 68.9 cm of snow per year and has around 124 frost days.
Has the climate of Dixon warmed?
Yes: Dixon warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Dixon?
The wettest day measured in Dixon between 1940 and 2025 was 25 June 2021, with 85 mm of rain in 24 hours.
What was the windiest day in Dixon?
The windiest day measured in Dixon between 1940 and 2025 was 6 April 1997, with winds reaching 54.9 km/h.
What is the warmest month in Dixon?
The warmest month in Dixon is July (23.2 °C on average); the coldest is January (-6.1 °C).
How much does it rain in Dixon?
Dixon receives on average 923 mm of precipitation per year, spread over about 112 rainy days.
Is it sunny in Dixon?
Dixon gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Dixon?
The heaviest 24-hour snowfall measured in Dixon between 1940 and 2025 was 15 December 1987, with 25.1 cm.
Are there tropical nights in Dixon?
Yes: Dixon has on average 26 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Dixon?
In Dixon, between 1940 and 2025, the highest apparent temperature reached 43.5 °C on 13 July 1995, and the lowest was -41.6 °C on 3 February 1996.
Compare Dixon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Dixon