Upton, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Upton, a town in Weston County, Wyoming.
This Afternoon
81°F
Mostly Sunny
Mostly sunny, with a high near 81. North wind around 5 mph.
7-day forecast for Upton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Mostly Sunny | 5 mph N | 4% |
| Tonight | 55°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SE | 73% |
| Saturday | 70°F | Showers And Thunderstorms Likely | 2 to 6 mph SE | 69% |
| Saturday Night | 51°F | Showers And Thunderstorms Likely | 1 to 6 mph S | 74% |
| Sunday | 63°F | Showers And Thunderstorms | 5 mph S | 96% |
| Sunday Night | 47°F | Showers And Thunderstorms | 5 mph SE | 75% |
| Monday | 66°F | Partly Sunny then Slight Chance Rain Showers | 3 to 9 mph S | 24% |
| Monday Night | 47°F | Partly Cloudy | 10 to 15 mph SE | 1% |
| Tuesday | 74°F | Mostly Sunny | 10 to 15 mph S | 2% |
| Tuesday Night | 51°F | Partly Cloudy | 9 to 15 mph SE | 12% |
| Wednesday | 78°F | Mostly Sunny | 6 to 9 mph S | 14% |
| Wednesday Night | 51°F | Mostly Clear | 6 mph SE | 11% |
| Thursday | 79°F | Sunny | 3 to 8 mph SE | 3% |
| Thursday Night | 52°F | Partly Cloudy | 7 to 10 mph SE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Upton (44.104, -104.637). Updated through the day.
Growing snapshot for Upton
Last spring frost
May 20
First fall frost
Sep 23
Growing season
123 days
Hardiness zone
4b
More local growing data for Upton: nearby ZIP 82730 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Upton, Wy (6.1 mi from Upton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.