McKinney climate — normals and trends
McKinney (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.0 °C and it receives 1,019 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 August (28.7 °C on average) and the coldest is January (6.4 °C). Rainfall peaks in May.
McKinney averages 30 frost days, 105 hot days (≥ 30 °C) and 95 rainy days per year.
McKinney 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 34 to 26 per year over the period.
The hottest day of the period reached 42.2 °C (on 18 August 2023) and the coldest -19.1 °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
McKinneyTexas
- coords
- 33.20°, -96.62°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.0°C
Average daily high
23.3°C
Average daily low
13.2°C
Annual rainfall
1,019mm
Sunshine / day
9.4h
Mean relative humidity
67%
Average peak wind
20.3km/h
Seasonal range
22.3°C
Frost days (< 0 °C)
30 d/yr
Hot days (≥ 30 °C)
105 d/yr
Rainy days (≥ 1 mm)
95 d/yr
Annual snowfall
6.7 cm
Average feels-like high
23.0 °C
Average feels-like low
11.7 °C
Average peak gust
38.1 km/h
Tropical nights (≥ 20 °C)
112 d/yr
Solar radiation
16.9 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
42.2 °C
18 August 2023
Coldest day
-19.1 °C
16 February 2021
Wettest day
134 mm
22 August 2022
Windiest day
50.1 km/h
14 December 1971
Strongest gust
97.6 km/h
12 September 1961
Hottest feels-like
45.2 °C
27 June 1980
Coldest feels-like
-24.6 °C
23 December 1989
Snowiest day
17.9 cm
1 March 1942
Sunniest day
13.6 h
11 June 2020
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 | 10.6 °C | -1.2 °C | 117 mm | +55 mm |
| Feb | 14.7 °C | +0.5 °C | 40 mm | -34 mm |
| Mar | 22.9 °C | +4.3 °C | 86 mm | -14 mm |
| Apr | 24.6 °C | +1.5 °C | 137 mm | +11 mm |
| May | 27.4 °C | +0.4 °C | 127 mm | -22 mm |
| Jun | 31.5 °C | +0.3 °C | 96 mm | +11 mm |
| Jul | 34.0 °C | +0.3 °C | 54 mm | +5 mm |
| Aug | 33.6 °C | -0.4 °C | 41 mm | -7 mm |
| Sep | 32.3 °C | +2.1 °C | 22 mm | -51 mm |
| Oct | 28.0 °C | +3.2 °C | 79 mm | -15 mm |
| Nov | 22.0 °C | +3.9 °C | 125 mm | +36 mm |
| Dec | 16.5 °C | +3.1 °C | 10 mm | -62 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 McKinney?
McKinney has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.0 °C and it receives 1,019 mm of precipitation per year.
What is the hottest day ever recorded in McKinney?
The hottest day measured in McKinney between 1940 and 2025 was 18 August 2023, reaching 42.2 °C.
What is the coldest day in McKinney?
The coldest day measured in McKinney between 1940 and 2025 was 16 February 2021, at -19.1 °C.
Does it snow in McKinney?
Yes. McKinney gets on average 6.7 cm of snow per year and has around 30 frost days.
Has the climate of McKinney warmed?
Yes: McKinney warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in McKinney?
The wettest day measured in McKinney between 1940 and 2025 was 22 August 2022, with 134 mm of rain in 24 hours.
What was the windiest day in McKinney?
The windiest day measured in McKinney between 1940 and 2025 was 14 December 1971, with winds reaching 50.1 km/h.
What is the warmest month in McKinney?
The warmest month in McKinney is August (28.7 °C on average); the coldest is January (6.4 °C).
How much does it rain in McKinney?
McKinney receives on average 1,019 mm of precipitation per year, spread over about 95 rainy days.
Is it sunny in McKinney?
McKinney gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in McKinney?
The heaviest 24-hour snowfall measured in McKinney between 1940 and 2025 was 1 March 1942, with 17.9 cm.
Are there tropical nights in McKinney?
Yes: McKinney has on average 112 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in McKinney?
In McKinney, between 1940 and 2025, the highest apparent temperature reached 45.2 °C on 27 June 1980, and the lowest was -24.6 °C on 23 December 1989.
Compare McKinney with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around McKinney