Lamar, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamar, a city in Prowers County, Colorado.
Overnight
66°F
Mostly Clear
Mostly clear, with a low around 66. North wind 20 to 25 mph, with gusts as high as 40 mph.
7-day forecast for Lamar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Mostly Clear | 20 to 25 mph N | 2% |
| Tuesday | 83°F | Patchy Smoke | 15 to 30 mph NE | 3% |
| Tuesday Night | 60°F | Partly Cloudy | 10 to 15 mph E | 9% |
| Wednesday | 91°F | Sunny | 10 to 20 mph E | 0% |
| Wednesday Night | 60°F | Mostly Clear then Slight Chance Rain Showers | 5 to 20 mph E | 21% |
| Thursday | 98°F | Sunny | 5 to 15 mph SE | 1% |
| Thursday Night | 65°F | Mostly Clear | 5 to 15 mph SE | 4% |
| Friday | 101°F | Sunny | 5 to 15 mph S | 2% |
| Friday Night | 66°F | Mostly Clear | 10 to 15 mph SSE | 4% |
| Saturday | 104°F | Sunny | 5 to 15 mph SSW | 0% |
| Saturday Night | 69°F | Mostly Clear | 15 mph S | 0% |
| Sunday | 105°F | Sunny | 10 to 15 mph SSW | 0% |
| Sunday Night | 70°F | Mostly Clear | 20 mph S | 0% |
| Monday | 104°F | Sunny | 15 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov) for Lamar (38.076, -102.615). Updated through the day.
Growing snapshot for Lamar
Last spring frost
May 2
First fall frost
Oct 7
Growing season
157 days
Hardiness zone
6a
More local growing data for Lamar: nearby ZIP 81052 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lamar Muni Ap, Co (7.1 mi from Lamar). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.