Harman US

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

WhenTempForecastWindPrecip
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.