Lamar, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamar, a city in Prowers County, Colorado.
This Afternoon
94°F
Mostly Sunny
Mostly sunny, with a high near 94. Southwest wind around 10 mph.
7-day forecast for Lamar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 94°F | Mostly Sunny | 10 mph SW | 8% |
| Tonight | 61°F | Partly Cloudy | 5 to 10 mph W | 9% |
| Saturday | 86°F | Mostly Sunny | 5 to 10 mph N | 6% |
| Saturday Night | 59°F | Showers And Thunderstorms Likely | 5 to 15 mph ENE | 63% |
| Sunday | 76°F | Slight Chance Rain Showers then Partly Sunny | 5 to 15 mph NE | 19% |
| Sunday Night | 55°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 15 mph NE | 67% |
| Monday | 73°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph ESE | 24% |
| Monday Night | 55°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 to 15 mph ESE | 55% |
| Tuesday | 74°F | Chance Rain Showers | 15 to 25 mph SSE | 27% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 20 mph SE | 34% |
| Wednesday | 76°F | Chance Rain Showers | 20 to 25 mph SSE | 35% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 10 to 20 mph SSE | 32% |
| Thursday | 78°F | Chance Showers And Thunderstorms | 10 mph SSE | 26% |
| Thursday Night | 59°F | Chance Showers And Thunderstorms | 10 mph SSE | 29% |
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 Sep 18, 2026.