Glenrock, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glenrock, a town in Converse County, Wyoming.
Tonight
53°F
Slight Chance Showers And Thunderstorms then Mostly Cloudy
A slight chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 53. South southwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Glenrock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph SSW | 23% |
| Saturday | 73°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph WSW | 29% |
| Saturday Night | 46°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 23% |
| Sunday | 64°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 10 mph NW | 21% |
| Sunday Night | 41°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph WSW | 21% |
| Monday | 70°F | Sunny | 5 mph SE | 3% |
| Monday Night | 44°F | Mostly Clear | 0 to 15 mph SE | 0% |
| Tuesday | 77°F | Sunny | 0 to 10 mph NW | 1% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph SSE | 12% |
| Wednesday | 78°F | Mostly Sunny | 5 to 10 mph W | 10% |
| Wednesday Night | 48°F | Mostly Clear | 5 to 10 mph SSW | 4% |
| Thursday | 79°F | Mostly Sunny | 5 to 10 mph SSE | 6% |
| Thursday Night | 50°F | Partly Cloudy | 5 to 10 mph SE | 10% |
| Friday | 80°F | Mostly Sunny | 5 to 10 mph SW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Glenrock (42.856, -105.862). Updated through the day.
Growing snapshot for Glenrock
Last spring frost
May 12
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
5a
More local growing data for Glenrock: nearby ZIP 82637 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Casper 1Sw, Wy (22.6 mi from Glenrock). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.