Jeffrey City, WY Weather & Growing Conditions
Today
70°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between noon and 3pm, then a chance of showers and thunderstorms. Mostly sunny. High near 70, with temperatures falling to around 67 in the afternoon. Southwest wind 7 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 7 to 13 mph SW | 37% |
| Tonight | 40°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 12 mph WNW | 48% |
| Sunday | 63°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 to 8 mph WNW | 21% |
| Sunday Night | 39°F | Partly Cloudy | 0 to 7 mph ENE | 3% |
| Monday | 69°F | Sunny | 0 to 9 mph SSW | 0% |
| Monday Night | 41°F | Mostly Clear | 2 to 6 mph SSW | 0% |
| Tuesday | 74°F | Mostly Sunny | 2 to 12 mph SSW | 3% |
| Tuesday Night | 45°F | Chance Showers And Thunderstorms | 7 mph SSW | 40% |
| Wednesday | 74°F | Mostly Sunny | 10 to 14 mph SW | 9% |
| Wednesday Night | 45°F | Partly Cloudy | 7 mph SW | 6% |
| Thursday | 76°F | Sunny | 6 to 9 mph SSW | 1% |
| Thursday Night | 47°F | Partly Cloudy | 7 mph SSW | 3% |
| Friday | 77°F | Mostly Sunny | 8 to 14 mph SSW | 6% |
| Friday Night | 48°F | Partly Cloudy | 13 mph SSW | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Jeffrey City, WY
Last spring frost
Jun 1
First fall frost
Sep 13
Growing season
104 days
Hardiness zone
4b
Explore more for Jeffrey City, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Jeffrey City, Wy (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.