Crystal climate — normals and trends
Crystal (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 7.2 °C and it receives 832 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 (22.6 °C on average) and the coldest is January (-10.2 °C). Rainfall peaks in June.
Crystal averages 146 frost days, 20 hot days (≥ 30 °C) and 107 rainy days per year.
Crystal has warmed by +2.1 °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 155 to 137 per year over the period.
The hottest day of the period reached 38.9 °C (on 15 July 1988) and the coldest -36.2 °C (on 30 January 1951).
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
CrystalMinnesota
- coords
- 45.03°, -93.36°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.2°C
Average daily high
11.9°C
Average daily low
2.6°C
Annual rainfall
832mm
Sunshine / day
8.8h
Mean relative humidity
70%
Average peak wind
18.2km/h
Seasonal range
32.8°C
Frost days (< 0 °C)
146 d/yr
Hot days (≥ 30 °C)
20 d/yr
Rainy days (≥ 1 mm)
107 d/yr
Annual snowfall
92.8 cm
Average feels-like high
9.5 °C
Average feels-like low
-0.6 °C
Average peak gust
37.8 km/h
Tropical nights (≥ 20 °C)
17 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.32 · 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
38.9 °C
15 July 1988
Coldest day
-36.2 °C
30 January 1951
Wettest day
98 mm
23 September 2010
Windiest day
59.7 km/h
10 October 1949
Strongest gust
111.2 km/h
10 October 1949
Hottest feels-like
43.3 °C
18 July 2011
Coldest feels-like
-41.7 °C
30 January 1951
Snowiest day
27.4 cm
1 November 1991
Sunniest day
15.1 h
20 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 | -4.9 °C | +1.1 °C | 7 mm | -19 mm |
| Feb | -4.3 °C | -1.2 °C | 19 mm | -7 mm |
| Mar | 9.3 °C | +5.5 °C | 74 mm | +18 mm |
| Apr | 13.4 °C | +0.8 °C | 121 mm | +37 mm |
| May | 20.8 °C | +1.0 °C | 79 mm | -24 mm |
| Jun | 25.0 °C | 0.0 °C | 200 mm | +86 mm |
| Jul | 28.3 °C | +0.7 °C | 79 mm | -12 mm |
| Aug | 26.0 °C | -0.3 °C | 71 mm | -32 mm |
| Sep | 23.7 °C | +2.4 °C | 71 mm | -16 mm |
| Oct | 16.5 °C | +2.2 °C | 41 mm | -21 mm |
| Nov | 7.2 °C | +2.8 °C | 37 mm | -13 mm |
| Dec | -3.5 °C | -0.3 °C | 42 mm | +9 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 Crystal?
Crystal has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 7.2 °C and it receives 832 mm of precipitation per year.
What is the hottest day ever recorded in Crystal?
The hottest day measured in Crystal between 1940 and 2025 was 15 July 1988, reaching 38.9 °C.
What is the coldest day in Crystal?
The coldest day measured in Crystal between 1940 and 2025 was 30 January 1951, at -36.2 °C.
Does it snow in Crystal?
Yes. Crystal gets on average 92.8 cm of snow per year and has around 146 frost days.
Has the climate of Crystal warmed?
Yes: Crystal warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Crystal?
The wettest day measured in Crystal between 1940 and 2025 was 23 September 2010, with 98 mm of rain in 24 hours.
What was the windiest day in Crystal?
The windiest day measured in Crystal between 1940 and 2025 was 10 October 1949, with winds reaching 59.7 km/h.
What is the warmest month in Crystal?
The warmest month in Crystal is July (22.6 °C on average); the coldest is January (-10.2 °C).
How much does it rain in Crystal?
Crystal receives on average 832 mm of precipitation per year, spread over about 107 rainy days.
Is it sunny in Crystal?
Crystal gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Crystal?
The heaviest 24-hour snowfall measured in Crystal between 1940 and 2025 was 1 November 1991, with 27.4 cm.
Are there tropical nights in Crystal?
Yes: Crystal has on average 17 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Crystal?
In Crystal, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 18 July 2011, and the lowest was -41.7 °C on 30 January 1951.
Compare Crystal with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Crystal