Riverton weather by month & the best time to visit
🇺🇸 United States · alpine / mountain town · hot-summer continental climate
The best time to visit Riverton is July — its sunniest month (Sunshine Score 94/100), with August and June close behind. Riverton averages about 3,100 hours of sunshine a year. Daytime highs around 32°C / 90°F and roughly 21 mm of rain in July.
Jump to: month-by-month table · nearby alternatives · embed this data
- Sun hours / year
- 3,100
- Sunniest month
- July
- Peak score
- 94/100
- Rain / year
- 361 mm
- Snow / year
- ≈1.5 m
- Midday UV at peak
- 9 (very high)
- Population
- 11k
- Elevation
- 1,668 m
When is the best time to visit Riverton?
For sunshine, the best time to visit Riverton is July, then August and June. The dullest month is January (0/100, 17 mm of rain). The full month-by-month picture is in the table below.
How sunny is Riverton?
Riverton is one of the sunniest places on Earth: about 3,100 hours of sunshine a year. 94 Sunshine Score points separate July (94) from January (0), so the month you pick matters. It ranks #76 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 361 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 | 3° / 37°F | -7° / 19°F | 17 mm | 1 |
| February | 0 | 4° / 39°F | -7° / 19°F | 23 mm | 2 |
| March | 8 | 9° / 48°F | -3° / 27°F | 32 mm | 4 |
| April | 37 | 13° / 55°F | 0° / 32°F | 46 mm | 5 |
| May | 78 | 19° / 66°F | 5° / 41°F | 66 mm | 7 |
| June | 92 | 27° / 81°F | 11° / 52°F | 31 mm | 9 |
| July | 94 | 32° / 90°F | 16° / 61°F | 21 mm | 9 |
| August | 94 | 30° / 86°F | 14° / 57°F | 20 mm | 8 |
| September | 92 | 24° / 75°F | 9° / 48°F | 31 mm | 6 |
| October | 53 | 15° / 59°F | 2° / 36°F | 32 mm | 4 |
| November | 0 | 8° / 46°F | -3° / 27°F | 20 mm | 2 |
| December | 0 | 2° / 36°F | -8° / 18°F | 22 mm | 1 |
See Riverton on the interactive sunshine globe →
Nearby places for sunshine
- Jackson Hole United States · 194 km · best in Jul · 2,836 h sun/yr
- Idaho Falls United States · 297 km · best in Jul · 2,995 h sun/yr
- Hayden United States · 305 km · best in Jun · 3,058 h sun/yr
- Billings United States · 305 km · best in Jul · 2,701 h sun/yr
- Bozeman United States · 370 km · best in Jul · 2,641 h sun/yr
- Salt Lake City United States · 386 km · best in Aug · 3,123 h sun/yr
Nearest destinations
- Casper United States · 163 km · 3,022 h sun/yr · best in Aug
- Cody United States · 168 km · 2,797 h sun/yr · best in Jul
- Rock Springs United States · 171 km · 3,116 h sun/yr · best in Jul
- Sheridan United States · 224 km · 2,830 h sun/yr · best in Jul
- Gillette United States · 275 km · 2,808 h sun/yr · best in Aug
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