Snow in McKinney, Texas Winter storm alerts · 7-day snow forecast · average snowfall
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McKinney averages 2.6 inches of snow a year. The snowiest month is February (1.3″), and snow usually falls from November through March. On about 1 days a year at least an inch falls. Snow covers the ground (1″+) on roughly 2 days of an average winter.
Average snowfall by month
Month
Snowfall
Days 1″+
Days with snow cover
Freezing nights
Avg. low
November
0.1″
<1
0
4
44°F
December
0.6″
<1
1
14
36°F
January
0.2″
<1
<1
16
34°F
February
1.3″
<1
1
10
38°F
March
0.4″
<1
<1
3
46°F
Year
2.6″
1
2
48
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Frisco (10 mi from the city center, +102 ft elevation difference); temperatures at Mckinney Muni Airport. Averages smooth out big years: single winters can bring half or double the normal.
2.6 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Frisco station, 10 miles away). The snowiest month is February with 1.3 inches.
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How many freezing nights does McKinney have?
About 48 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, January, averages a low of 34 °F.