Stillwater, Oklahoma Climate by Month
Stillwater, Oklahoma, United States
Hot summers and cold winters, with rain spread through the year.
Hot summers and cold winters, with rain spread through the year: that's Stillwater's climate in short. Expect highs of 94°F (35°C) in July and 50°F (10°C) in January, with the coldest nights (January) near 26°F (-3°C). It gets 34 in (876 mm) of rain a year, spread across the months.
- Warmest month
- 94°F(35°C)
- Average high, July
- Coldest nights
- 26°F(-3°C)
- Average low, January
- Rain per year
- 34 in(876 mm)
- No clear rainy season
- Humidity
- 63%
- Sunniest: July
Best and worst months in Stillwater
Best for weatherThe most comfortable weather comes in April and October, with highs around 74°F (23°C) and about 3.2 in (82 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 50°F (10°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 October.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Stillwater weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 50°F(10°C) | 26°F(-3°C) | 1.2 in(30 mm) | 64% | 2.4 |
| FebFebruary | 55°F(13°C) | 31°F(-1°C) | 1.5 in(38 mm) | 64% | 3.3 |
| MarMarch | 64°F(18°C) | 40°F(4°C) | 2.6 in(65 mm) | 61% | 4.2 |
| AprAprilBest | 73°F(23°C) | 48°F(9°C) | 3.5 in(90 mm) | 60% | 5.2 |
| MayMay | 81°F(27°C) | 58°F(15°C) | 4.7 in(119 mm) | 65% | 5.8 |
| JunJune | 89°F(32°C) | 68°F(20°C) | 4.0 in(101 mm) | 66% | 6.5 |
| JulJuly | 94°F(35°C) | 72°F(22°C) | 3.7 in(93 mm) | 62% | 6.8 |
| AugAugust | 94°F(34°C) | 70°F(21°C) | 3.2 in(82 mm) | 59% | 6.1 |
| SepSeptember | 86°F(30°C) | 62°F(17°C) | 3.5 in(88 mm) | 63% | 5.0 |
| OctOctoberBest | 75°F(24°C) | 49°F(10°C) | 2.9 in(73 mm) | 63% | 3.7 |
| NovNovember | 62°F(16°C) | 38°F(3°C) | 2.2 in(57 mm) | 66% | 2.6 |
| DecDecember | 51°F(11°C) | 29°F(-2°C) | 1.6 in(40 mm) | 60% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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