McKinney Climate by Month
McKinney, Texas, United States
Very hot summers and cool winters, with rain spread through the year.
The climate in McKinney is one of very hot summers and cool winters, with rain spread through the year. Expect highs of 96°F (36°C) in August and 56°F (13°C) in January, with the coldest nights (January) near 34°F (1°C). It gets 40 in (1021 mm) of rain a year, spread across the months.
- Warmest month
- 96°F(36°C)
- Average high, August
- Coldest nights
- 34°F(1°C)
- Average low, January
- Rain per year
- 40 in(1021 mm)
- No clear rainy season
- Humidity
- 64%
- Sunniest: July
Best and worst months in McKinney
Best for weatherApril and October are the best time for weather in McKinney: highs near 78°F (26°C) and about 3.7 in (95 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; August is the hottest, with highs of 96°F (36°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
McKinney weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 56°F(13°C) | 34°F(1°C) | 2.2 in(57 mm) | 69% | 2.5 |
| FebFebruary | 61°F(16°C) | 38°F(4°C) | 2.8 in(72 mm) | 66% | 3.2 |
| MarMarch | 69°F(20°C) | 46°F(8°C) | 3.4 in(86 mm) | 63% | 4.1 |
| AprAprilBest | 77°F(25°C) | 53°F(12°C) | 3.8 in(96 mm) | 67% | 5.2 |
| MayMay | 84°F(29°C) | 63°F(17°C) | 5.5 in(139 mm) | 68% | 5.5 |
| JunJune | 91°F(33°C) | 71°F(21°C) | 4.1 in(104 mm) | 67% | 6.3 |
| JulJuly | 96°F(36°C) | 74°F(23°C) | 2.3 in(59 mm) | 61% | 6.7 |
| AugAugust | 96°F(36°C) | 73°F(23°C) | 2.3 in(58 mm) | 59% | 6.1 |
| SepSeptember | 89°F(32°C) | 66°F(19°C) | 4.3 in(108 mm) | 59% | 5.0 |
| OctOctoberBest | 79°F(26°C) | 55°F(13°C) | 3.7 in(94 mm) | 62% | 3.8 |
| NovNovember | 67°F(19°C) | 44°F(7°C) | 3.0 in(75 mm) | 67% | 2.7 |
| DecDecember | 57°F(14°C) | 36°F(2°C) | 2.9 in(73 mm) | 65% | 2.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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