Weatheo

McKinney weather by month

Warmest month

August

96°F (36°C) average high

Coolest month

January

37°F (3°C) average low

Wettest month

May

5.3 in (134 mm) of rain

Driest month

January

1.8 in (45 mm) of rain

Average temperature and rainfall in McKinney by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January58°F37°F9°F / 78°F
1.8 in
66%9 mph
February62°F42°F5°F / 83°F
2.4 in
67%10 mph
March71°F51°F21°F / 89°F
2.9 in
61%11 mph
April75°F55°F35°F / 91°F
3.4 in
66%10 mph
May83°F65°F44°F / 95°F
5.3 in
68%9 mph
June91°F74°F65°F / 101°F
2.6 in
67%9 mph
July95°F76°F65°F / 102°F
1.8 in
62%8 mph
August96°F77°F71°F / 107°F
1.8 in
60%7 mph
September91°F71°F57°F / 102°F
2.6 in
66%7 mph
October81°F61°F42°F / 94°F
4.1 in
68%9 mph
November69°F50°F26°F / 90°F
2.6 in
69%8 mph
December63°F44°F24°F / 80°F
3.8 in
67%9 mph

Frost and snow-likely months in McKinney

No month in McKinney averages a night of 36°F (2°C) or below. The coldest month is January with an average low of 37°F (3°C) and a record low of 9°F (-13°C), so frost is rare and snow is very unlikely.

These records carry temperature and precipitation, not snowfall totals.

Best time to visit McKinney

The most comfortable time to visit McKinney is generally March to April and November, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 34.8 in (884 mm) a year.

Travellers who prefer heat should aim for August, when highs average 96°F (36°C). May is the month to avoid if rain would spoil your plans — it averages 5.3 in (134 mm), roughly 3× the rainfall of the driest month (January).

McKinney climate: your questions

Will it snow in McKinney this year?

No: the coldest month in McKinney is January with an average low of 37°F (3°C) and a record low of 9°F (-13°C), so snow is very unlikely. What is falling now: McKinney weather today.

Will McKinney get snow this winter?

McKinney's winter months average lows of 44°F (6°C) in December, 37°F (3°C) in January and 42°F (5°C) in February, with about 8 in (202 mm) of precipitation across the three; 0 of them sit at or below 32°F (0°C), so snow is unlikely. The records hold no snowfall totals. The next 15 days: McKinney 10-day forecast.

When is the best time to visit McKinney?

March to April and November are the most comfortable months in McKinney, with highs near 72°F (22°C). August is the warmest month, averaging 96°F (36°C) by day; May is the wettest, with 5.3 in (134 mm); and January is the coolest, with lows near 37°F (3°C). What it is doing today: McKinney weather today.

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the McKinney forecast for what is happening now.

Nearest cities: Monthly climate

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