Long-Range Weather Forecast for McKinney, TX

May 2026 Long Range Weather Forecast for Texas-Oklahoma

Dates	Weather Conditions
May 1-3	T-storms, cool
May 4-6	Sunny, warm
May 7-11	A few t-storms; cool north, warm south
May 12-14	Sunny, cool
May 15-21	T-storms, warm
May 22-28	Rainy, cool
May 29-31	Tropical storm threat
May	temperature 73.5° (2° below avg. north, 1° above south) precipitation 8" (3" above avg.)

June 2026 Long Range Weather Forecast for Texas-Oklahoma

Dates	Weather Conditions
Jun 1-3	Sunny, hot
Jun 4-9	T-storms, some heavy; turning cool
Jun 10-16	Sunny, hot
Jun 17-22	Sunny north, a few t-storms south; warm
Jun 23-30	Scattered t-storms, warm
June	temperature 81° (1° above avg.) precipitation 5.5" (1" above avg. north, 3" above south)

12-Month Long-Range Weather Outlook

November 2025 to October 2026

Winter will be warmer than normal, with the coldest periods in mid-December, early and late January, and early February. Precipitation and snowfall will be below normal; the best chance for snow is in mid-November. April and May will be warmer and wetter than usual. Watch for a tropical storm in late May. Summer will be hot, with the hottest periods in early and mid-June, mid-July, and late August. Rainfall will be above normal. Watch for a tropical storm in late August. September and October look to be cooler than normal in the north and warmer south, with above-normal rainfall.

See the complete 12-month weather forecast in The Old Farmer’s Almanac..

Weather Trend Graph

November 2025 to October 2026