Hays climate — normals and trends
Hays (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.2 °C and it receives 658 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 (26.3 °C on average) and the coldest is January (-2.3 °C). Rainfall peaks in May.
Hays averages 114 frost days, 75 hot days (≥ 30 °C) and 84 rainy days per year.
Hays has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 120 to 108 per year over the period.
The hottest day of the period reached 43.2 °C (on 27 June 2012) and the coldest -30.9 °C (on 22 December 1989).
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
HaysKansas
- coords
- 38.88°, -99.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.2°C
Average daily high
18.6°C
Average daily low
6.5°C
Annual rainfall
658mm
Sunshine / day
9.8h
Mean relative humidity
63%
Average peak wind
23.0km/h
Seasonal range
28.6°C
Frost days (< 0 °C)
114 d/yr
Hot days (≥ 30 °C)
75 d/yr
Rainy days (≥ 1 mm)
84 d/yr
Annual snowfall
54.3 cm
Average feels-like high
16.2 °C
Average feels-like low
3.3 °C
Average peak gust
42.2 km/h
Tropical nights (≥ 20 °C)
43 d/yr
Solar radiation
17.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °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
43.2 °C
27 June 2012
Coldest day
-30.9 °C
22 December 1989
Wettest day
108 mm
30 October 1979
Windiest day
68.6 km/h
18 March 1971
Strongest gust
124.9 km/h
15 December 2021
Hottest feels-like
44.3 °C
26 July 2014
Coldest feels-like
-36.4 °C
22 December 1989
Snowiest day
23.8 cm
24 March 1957
Sunniest day
14.7 h
18 June 2022
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 | 3.5 °C | -0.5 °C | 20 mm | -1 mm |
| Feb | 5.2 °C | -1.4 °C | 11 mm | -17 mm |
| Mar | 18.4 °C | +6.5 °C | 29 mm | -27 mm |
| Apr | 20.6 °C | +2.3 °C | 64 mm | -5 mm |
| May | 23.2 °C | -0.3 °C | 98 mm | -5 mm |
| Jun | 30.1 °C | +0.5 °C | 75 mm | -9 mm |
| Jul | 33.0 °C | +0.4 °C | 51 mm | -20 mm |
| Aug | 30.7 °C | -0.8 °C | 118 mm | +52 mm |
| Sep | 27.2 °C | +0.2 °C | 106 mm | +48 mm |
| Oct | 21.2 °C | +0.7 °C | 46 mm | -4 mm |
| Nov | 14.6 °C | +2.5 °C | 49 mm | +18 mm |
| Dec | 11.1 °C | +5.2 °C | 3 mm | -21 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 Hays?
Hays has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.2 °C and it receives 658 mm of precipitation per year.
What is the hottest day ever recorded in Hays?
The hottest day measured in Hays between 1940 and 2025 was 27 June 2012, reaching 43.2 °C.
What is the coldest day in Hays?
The coldest day measured in Hays between 1940 and 2025 was 22 December 1989, at -30.9 °C.
Does it snow in Hays?
Yes. Hays gets on average 54.3 cm of snow per year and has around 114 frost days.
Has the climate of Hays warmed?
Yes: Hays warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hays?
The wettest day measured in Hays between 1940 and 2025 was 30 October 1979, with 108 mm of rain in 24 hours.
What was the windiest day in Hays?
The windiest day measured in Hays between 1940 and 2025 was 18 March 1971, with winds reaching 68.6 km/h.
What is the warmest month in Hays?
The warmest month in Hays is July (26.3 °C on average); the coldest is January (-2.3 °C).
How much does it rain in Hays?
Hays receives on average 658 mm of precipitation per year, spread over about 84 rainy days.
Is it sunny in Hays?
Hays gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hays?
The heaviest 24-hour snowfall measured in Hays between 1940 and 2025 was 24 March 1957, with 23.8 cm.
Are there tropical nights in Hays?
Yes: Hays has on average 43 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hays?
In Hays, between 1940 and 2025, the highest apparent temperature reached 44.3 °C on 26 July 2014, and the lowest was -36.4 °C on 22 December 1989.
Compare Hays with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hays