Lyman, WY Weather & Growing Conditions
This Afternoon
48°F
Mostly Sunny
Mostly sunny. High near 48, with temperatures falling to around 44 in the afternoon. East wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Mostly Sunny | 5 mph E | 0% |
| Tonight | 25°F | Mostly Cloudy then Patchy Fog | 0 to 5 mph NE | 2% |
| Wednesday | 44°F | Chance Rain And Snow | 3 mph WNW | 25% |
| Wednesday Night | 22°F | Slight Chance Light Rain then Partly Cloudy | 5 mph SW | 18% |
| Thursday | 48°F | Mostly Sunny | 3 mph W | 2% |
| Thursday Night | 25°F | Partly Cloudy | 2 to 6 mph WSW | 2% |
| Friday | 49°F | Sunny | 5 to 10 mph W | 1% |
| Friday Night | 25°F | Mostly Clear | 5 to 9 mph WSW | 1% |
| Saturday | 53°F | Sunny | 5 mph W | 0% |
| Saturday Night | 25°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 59°F | Sunny | 2 mph W | 0% |
| Sunday Night | 29°F | Partly Cloudy | 5 mph WSW | 0% |
| Monday | 57°F | Mostly Sunny | 2 mph W | 0% |
| Monday Night | 31°F | Mostly Cloudy | 3 mph SW | 2% |
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 Nov 4, 2026.