Historical Weather in McKinney, TX
See 55+ years of weather history for any date in McKinney going back to 1970.
Part of Texas weather history · Texas temperature records
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Monthly Climate Averages
Historical temperature and precipitation averages for McKinney, TX, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
McKinney, TX Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
McKinney, TX Monthly Precipitation
Average rainfall and snowfall per month, in inches.
McKinney, TX Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Growing Season & Frost in McKinney, TX
Based on the dates the average overnight low reaches freezing (32°F / 0°C), from 50+ years of NOAA station data.
McKinney, TX also averages 89 days a year at or above 90°F.
Hours of Daylight in McKinney, TX
Day length across the year at 33.2°N latitude. Computed from solar geometry.
Best Time to Visit McKinney, TX
McKinney, TX has no months that meet our "pleasant" threshold — every season has tradeoffs.
McKinney Temperature Records
- Record High: The hottest temperature ever recorded in McKinney, TX is 112°F, set on June 26, 1980.
- Record Low: The coldest temperature ever recorded in McKinney, TX is -4°F, set on December 23, 1989.
- Data Coverage: Based on 57 years of data from NOAA weather station: MCKINNEY MUNI AP.
All-Time Record High
All-Time Record Low
Monthly Temperature Records in McKinney
| Month | Record High | Record Low |
|---|---|---|
| January | 82°F(2023) | 5°F(1982) |
| February | 91°F(2024) | -4°F(2021) |
| March | 96°F(1974) | 13°F(1980) |
| April | 100°F(2006) | 19°F(1991) |
| May | 101°F(2003) | 35°F(2013) |
| June | 112°F(1980) | 50°F(1970) |
| July | 111°F(1998) | 53°F(1970) |
| August | 109°F(2024) | 53°F(1989) |
| September | 112°F(2000) | 39°F(1983) |
| October | 100°F(1979) | 24°F(1993) |
| November | 91°F(2017) | 15°F(1976) |
| December | 88°F(2005) | -4°F(1989) |