Keller climate — normals and trends
Keller (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.5 °C and it receives 896 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 (29.2 °C on average) and the coldest is January (6.8 °C). Rainfall peaks in May.
Keller averages 28 frost days, 116 hot days (≥ 30 °C) and 87 rainy days per year.
Keller has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 32 to 24 per year over the period.
The hottest day of the period reached 43.2 °C (on 18 August 2023) and the coldest -19.4 °C (on 16 February 2021).
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
KellerTexas
- coords
- 32.93°, -97.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.5°C
Average daily high
24.0°C
Average daily low
13.5°C
Annual rainfall
896mm
Sunshine / day
9.6h
Mean relative humidity
64%
Average peak wind
19.7km/h
Seasonal range
22.4°C
Frost days (< 0 °C)
28 d/yr
Hot days (≥ 30 °C)
116 d/yr
Rainy days (≥ 1 mm)
87 d/yr
Annual snowfall
6.1 cm
Average feels-like high
23.7 °C
Average feels-like low
12.2 °C
Average peak gust
37.8 km/h
Tropical nights (≥ 20 °C)
117 d/yr
Solar radiation
17.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.37 · 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
18 August 2023
Coldest day
-19.4 °C
16 February 2021
Wettest day
106 mm
19 May 1955
Windiest day
50.8 km/h
1 April 1983
Strongest gust
97.6 km/h
13 March 2019
Hottest feels-like
46.5 °C
27 June 1980
Coldest feels-like
-24.7 °C
16 February 2021
Snowiest day
17.0 cm
9 January 2025
Sunniest day
13.6 h
26 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 | 11.2 °C | -1.3 °C | 107 mm | +53 mm |
| Feb | 15.4 °C | +0.5 °C | 31 mm | -32 mm |
| Mar | 24.1 °C | +4.7 °C | 66 mm | -21 mm |
| Apr | 25.4 °C | +1.5 °C | 125 mm | +15 mm |
| May | 28.4 °C | +0.7 °C | 72 mm | -61 mm |
| Jun | 33.0 °C | +1.0 °C | 76 mm | +1 mm |
| Jul | 34.8 °C | +0.3 °C | 54 mm | +13 mm |
| Aug | 34.1 °C | -0.5 °C | 85 mm | +41 mm |
| Sep | 32.5 °C | +1.9 °C | 9 mm | -57 mm |
| Oct | 28.6 °C | +3.2 °C | 42 mm | -44 mm |
| Nov | 22.9 °C | +4.2 °C | 113 mm | +36 mm |
| Dec | 17.2 °C | +3.1 °C | 6 mm | -54 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 Keller?
Keller has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 896 mm of precipitation per year.
What is the hottest day ever recorded in Keller?
The hottest day measured in Keller between 1940 and 2025 was 18 August 2023, reaching 43.2 °C.
What is the coldest day in Keller?
The coldest day measured in Keller between 1940 and 2025 was 16 February 2021, at -19.4 °C.
Does it snow in Keller?
Yes. Keller gets on average 6.1 cm of snow per year and has around 28 frost days.
Has the climate of Keller warmed?
Yes: Keller warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Keller?
The wettest day measured in Keller between 1940 and 2025 was 19 May 1955, with 106 mm of rain in 24 hours.
What was the windiest day in Keller?
The windiest day measured in Keller between 1940 and 2025 was 1 April 1983, with winds reaching 50.8 km/h.
What is the warmest month in Keller?
The warmest month in Keller is July (29.2 °C on average); the coldest is January (6.8 °C).
How much does it rain in Keller?
Keller receives on average 896 mm of precipitation per year, spread over about 87 rainy days.
Is it sunny in Keller?
Keller gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Keller?
The heaviest 24-hour snowfall measured in Keller between 1940 and 2025 was 9 January 2025, with 17.0 cm.
Are there tropical nights in Keller?
Yes: Keller has on average 117 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Keller?
In Keller, between 1940 and 2025, the highest apparent temperature reached 46.5 °C on 27 June 1980, and the lowest was -24.7 °C on 16 February 2021.
Compare Keller with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Keller