Prowers County climbs toward 90 degrees by Monday after Sunday cool-down
Lamar is in for a stretch of warm, dry weather, with highs climbing into the mid-80s Saturday and reaching 90 degrees by Monday and Tuesday after a brief cool-down Sunday. National Weather Service forecasters in Pueblo expect mostly sunny skies and breezy afternoons through the weekend, with no measurable precipitation in the forecast.
Friday is sunny and mild in Prowers County, with current temperatures already near 78 degrees and a north wind 10 to 15 mph gusting above 20 mph. The Lamar Municipal Airport reported fair skies and 25 percent relative humidity in mid-afternoon. Skies stay mostly clear overnight, with lows around 42 degrees and winds turning to the south-southwest after midnight.
Eric Petersen, a meteorologist with the Pueblo forecast office, wrote in the latest Area Forecast Discussion that the southeast Colorado plains would remain under the influence of an upper-level ridge through the weekend, with widespread highs in the 70s and 80s and isolated 90-degree readings possible early next week.
Saturday warms toward the upper 80s
Saturday looks to be the warmest of the weekend in Lamar, with sunny skies and a high near 86 degrees. Winds begin out of the southwest at 10 to 15 mph before turning to the northwest in the afternoon as a weak cold front moves through. Saturday night turns partly cloudy then becomes cloudy, with a low near 42 degrees and a north-northeast wind 10 to 15 mph.
Lamar, Colo. — Five-day forecast (May 15-19, 2026)
Source: National Weather Service, Pueblo — Issued 2026-05-15
Period | Sky Conditions | High/Low | Wind |
|---|---|---|---|
| Friday | Fair, breezy at times | High near 78° | N 10-15 mph, gusts to 21 mph |
| Friday night | Mostly clear | Low around 42° | NNE 5-10 mph, SSW after midnight |
| Saturday | Sunny | High near 86° | SW 10-15 mph, NW in afternoon |
| Saturday night | Becoming cloudy | Low around 42° | NNE 10-15 mph |
| Sunday | Mostly sunny | High near 72° | N 5-10 mph, E in afternoon |
| Sunday night | Clear | Low around 40° | E 5-10 mph, S after midnight |
| Monday | Sunny | High near 90° | SSW 5-15 mph |
| Monday night | Clear | Low around 47° | SSE around 5 mph |
| Tuesday | Sunny | High near 90° | NW 10-15 mph, NE in afternoon |
| Tuesday night | Mostly clear | Low around 46° | E 5-15 mph |
(Kiowa County Press)
Sunday brings a brief cool-down
Sunday will be the coolest day of the period in Lamar, with mostly sunny skies and a high near 72 degrees in the wake of the front. Winds are expected to be light and northerly during the morning, shifting to the east by afternoon. Skies clear overnight, with a low near 40 degrees and a light easterly wind.
Extended outlook: 90 degrees by Monday
The warm-up returns quickly. Monday is expected to be sunny in Lamar with a high near 90 degrees and a south-southwest wind 5 to 15 mph. Tuesday continues sunny with another high near 90 and a northwest wind 10 to 15 mph shifting to the northeast in the afternoon. Overnight lows both nights are expected to remain mild, in the mid-to-upper 40s.
As of Friday morning, no Red Flag Warnings were in effect from the Pueblo forecast office for Prowers County, which is part of fire weather zone 236. Even without a formal watch, residents are reminded that highs in the upper 80s and 90s, gusty afternoon winds and continued dry fuels can elevate the risk of grass fires across the plains. Open burning restrictions should be checked with local authorities before any outdoor burning.
