Wyoming weather by month
Two stations, both in the mountainous northwest corner where visitors go — the high plains that make up most of Wyoming aren’t measured here.
Based on 2 weather stations.
The year across Wyoming
| Month | Highs | Nights | Wet days |
|---|---|---|---|
| January | 26–31° | 6–12° | 9–11 |
| February | 30–34° | 9–12° | 9 |
| March | 40–42° | 18–19° | 6–7 |
| April | 50° | 26° | 2–6 |
| May | 60° | 32–35° | 6 |
| June | 70° | 38–42° | 5–6 |
| July | 79–81° | 41–48° | 3–4 |
| August | 78–80° | 40–47° | 3–4 |
| September | 68–69° | 33–39° | 4 |
| October | 54–55° | 25–29° | 2–3 |
| November | 38–39° | 16–19° | 5–8 |
| December | 26–30° | 7–12° | 10–11 |
A single row can hide a real spread — open a month to see it region by region.
Jackson Hole & the Tetons
- Jackson Hole A high valley that pools cold air like a bowl: deep reliable winters, a short green summer, and shoulder seasons where half the town simply closes.
Yellowstone Country
- Yellowstone A high plateau with a real winter and a short spectacular summer, where the road system shapes your trip more than the thermometer does.