Alliance weather by month & the best time to visit
🇺🇸 United States · alpine / mountain town · humid subtropical climate
The best time to visit Alliance is September — its sunniest month (Sunshine Score 89/100), with August and July close behind. Alliance averages about 2,960 hours of sunshine a year. Daytime highs around 25°C / 77°F and roughly 42 mm of rain in September.
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- Sun hours / year
- 2,960
- Sunniest month
- September
- Peak score
- 89/100
- Rain / year
- 480 mm
- Snow / year
- ≈1.1 m
- Midday UV at peak
- 9 (very high)
- Population
- 22k
- Elevation
- 1,196 m
When is the best time to visit Alliance?
For sunshine, the best time to visit Alliance is September, then August and July. The dullest month is January (0/100, 7 mm of rain). The full month-by-month picture is in the table below.
How sunny is Alliance?
Alliance gets a lot of sun: around 2,960 hours a year. 89 Sunshine Score points separate September (89) from January (0), so the month you pick matters. It ranks #93 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 June, carries about 49% of the annual 480 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 3° / 37°F | -8° / 18°F | 7 mm | 2 |
| February | 0 | 4° / 39°F | -8° / 18°F | 11 mm | 3 |
| March | 23 | 11° / 52°F | -3° / 27°F | 24 mm | 4 |
| April | 57 | 16° / 61°F | 1° / 34°F | 59 mm | 6 |
| May | 81 | 21° / 70°F | 7° / 45°F | 82 mm | 7 |
| June | 82 | 28° / 82°F | 14° / 57°F | 78 mm | 9 |
| July | 83 | 32° / 90°F | 18° / 64°F | 73 mm | 9 |
| August | 86 | 30° / 86°F | 16° / 61°F | 55 mm | 8 |
| September | 89 | 25° / 77°F | 10° / 50°F | 42 mm | 6 |
| October | 61 | 16° / 61°F | 2° / 36°F | 29 mm | 4 |
| November | 8 | 9° / 48°F | -3° / 27°F | 11 mm | 2 |
| December | 0 | 3° / 37°F | -7° / 19°F | 9 mm | 1 |
See Alliance on the interactive sunshine globe →
Nearby places for sunshine
- Rapid City United States · 223 km · best in Sep · 2,793 h sun/yr
- Denver United States · 290 km · best in Sep · 3,169 h sun/yr
- Colorado Springs United States · 395 km · best in Jun · 3,289 h sun/yr
- Hayden United States · 408 km · best in Jun · 3,058 h sun/yr
- Eagle United States · 438 km · best in Jun · 3,154 h sun/yr
- Aspen United States · 465 km · best in Jun · 3,154 h sun/yr
Nearest destinations
- Scottsbluff United States · 68 km · 3,037 h sun/yr · best in Sep
- Chadron United States · 91 km · 2,956 h sun/yr · best in Sep
- Cheyenne United States · 194 km · 2,982 h sun/yr · best in Sep
- North Platte United States · 204 km · 2,892 h sun/yr · best in Sep
- Laramie United States · 252 km · 2,979 h sun/yr · best in Aug
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