Gillette weather by month & the best time to visit
🇺🇸 United States · small town · semi-arid climate
The best time to visit Gillette is August — its sunniest month (Sunshine Score 90/100), with September and July close behind. Gillette averages about 2,808 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 29 mm of rain in August.
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- Sun hours / year
- 2,808
- Sunniest month
- August
- Peak score
- 90/100
- Rain / year
- 387 mm
- Snow / year
- ≈1.3 m
- Midday UV at peak
- 9 (very high)
- Population
- 33k
- Elevation
- 1,319 m
When is the best time to visit Gillette?
For sunshine, the best time to visit Gillette is August, then September and July. The dullest month is January (0/100, 13 mm of rain). The full month-by-month picture is in the table below.
How sunny is Gillette?
Gillette gets a lot of sun: around 2,808 hours a year. 90 Sunshine Score points separate August (90) from January (0), so the month you pick matters. It ranks #116 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. Rain has a clear season: the wettest stretch, around May, carries about 46% of the annual 387 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 2° / 36°F | -9° / 16°F | 13 mm | 1 |
| February | 0 | 2° / 36°F | -9° / 16°F | 17 mm | 2 |
| March | 8 | 9° / 48°F | -4° / 25°F | 24 mm | 3 |
| April | 44 | 14° / 57°F | 0° / 32°F | 45 mm | 5 |
| May | 74 | 19° / 66°F | 5° / 41°F | 79 mm | 7 |
| June | 86 | 26° / 79°F | 11° / 52°F | 53 mm | 8 |
| July | 88 | 32° / 90°F | 16° / 61°F | 39 mm | 9 |
| August | 90 | 30° / 86°F | 15° / 59°F | 29 mm | 8 |
| September | 90 | 24° / 75°F | 9° / 48°F | 29 mm | 6 |
| October | 45 | 14° / 57°F | 1° / 34°F | 32 mm | 3 |
| November | 0 | 7° / 45°F | -4° / 25°F | 14 mm | 2 |
| December | 0 | 1° / 34°F | -9° / 16°F | 13 mm | 1 |
See Gillette on the interactive sunshine globe →
Nearby places for sunshine
- Rapid City United States · 201 km · best in Sep · 2,793 h sun/yr
- Billings United States · 286 km · best in Jul · 2,701 h sun/yr
- Jackson Hole United States · 424 km · best in Jul · 2,836 h sun/yr
- Hayden United States · 452 km · best in Jun · 3,058 h sun/yr
- Bismarck United States · 460 km · best in Sep · 2,676 h sun/yr
- Bozeman United States · 469 km · best in Jul · 2,641 h sun/yr
Nearest destinations
- Sheridan United States · 123 km · 2,830 h sun/yr · best in Jul
- Casper United States · 177 km · 3,022 h sun/yr · best in Aug
- Chadron United States · 259 km · 2,956 h sun/yr · best in Sep
- Riverton United States · 275 km · 3,100 h sun/yr · best in Jul
- Cody United States · 277 km · 2,797 h sun/yr · best in Jul
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