Stillwater weather by month & the best time to visit
United States · small town · humid subtropical climate

The best time to visit Stillwater is September — its sunniest month (Sunshine Score 81/100), with October and April close behind. Stillwater averages about 2,819 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 81 mm of rain in September.
When is the best time to visit Stillwater?
For sunshine, the best time to visit Stillwater is September, then October and April. The dullest month is January (0/100, 37 mm of rain). The full month-by-month picture is in the table below.
How sunny is Stillwater?
Stillwater gets a lot of sun: around 2,819 hours a year. 81 Sunshine Score points separate September (81) from January (0), so the month you pick matters. It ranks #115 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 937 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 8° / 46°F | -3° / 27°F | 37 mm | 2 |
| February | 15 | 10° / 50°F | -2° / 28°F | 43 mm | 3 |
| March | 62 | 17° / 63°F | 4° / 39°F | 68 mm | 5 |
| April | 78 | 22° / 72°F | 9° / 48°F | 96 mm | 7 |
| May | 71 | 27° / 81°F | 15° / 59°F | 135 mm | 8 |
| June | 74 | 32° / 90°F | 20° / 68°F | 117 mm | 9 |
| July | 55 | 35° / 95°F | 23° / 73°F | 90 mm | 9 |
| August | 62 | 34° / 93°F | 22° / 72°F | 100 mm | 8 |
| September | 81 | 30° / 86°F | 17° / 63°F | 81 mm | 7 |
| October | 80 | 23° / 73°F | 10° / 50°F | 84 mm | 5 |
| November | 58 | 16° / 61°F | 3° / 37°F | 45 mm | 3 |
| December | 7 | 9° / 48°F | -2° / 28°F | 41 mm | 2 |
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Stillwater: questions and answers
What kind of destination is Stillwater?
Stillwater is a small town in United States with a humid subtropical climate.
How many hours of sunshine does Stillwater get a year?
Stillwater gets about 2,819 hours of sunshine a year, at its best around September.
When is the best time to visit Stillwater?
The sunniest time to visit Stillwater is September, when the Sunshine Score peaks at 81/100 (with October and April close behind). Expect daytime highs around 30°C / 86°F.
What is the least sunny month in Stillwater?
January is the least sunny month in Stillwater, scoring 0/100 with about 37 mm of rain.
How strong is the sun in Stillwater?
The typical midday UV index in Stillwater peaks around 9 (very high) in June, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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