Lyman, WY Weather & Growing Conditions
Today
64°F
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms after 9am. Partly sunny. High near 64, with temperatures falling to around 62 in the afternoon. West wind 3 to 12 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Scattered Showers And Thunderstorms | 3 to 12 mph W | 43% |
| Tonight | 34°F | Partly Cloudy | 5 to 12 mph W | 9% |
| Sunday | 66°F | Sunny | 5 to 9 mph W | 0% |
| Sunday Night | 34°F | Mostly Clear | 1 to 8 mph W | 0% |
| Monday | 70°F | Sunny | 2 mph WNW | 0% |
| Monday Night | 39°F | Partly Cloudy | 2 mph SSW | 4% |
| Tuesday | 69°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 mph SE | 45% |
| Tuesday Night | 38°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 36% |
| Wednesday | 72°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph WSW | 13% |
| Wednesday Night | 37°F | Partly Cloudy | 5 mph SW | 2% |
| Thursday | 75°F | Sunny | 3 mph SSW | 3% |
| Thursday Night | 40°F | Partly Cloudy | 5 mph S | 4% |
| Friday | 75°F | Mostly Sunny | 2 mph WNW | 7% |
| Friday Night | 42°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 7 mph SW | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lyman, WY
Last spring frost
Jun 14
First fall frost
Sep 9
Growing season
84 days
Hardiness zone
5a
Explore more for Lyman, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Mtn View, Wy (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.