Lamar climbs toward 98 degrees Tuesday as Prowers County dries out
Lamar faces the hottest stretch of the week early on, with a high near 91 Monday and 98 Tuesday, before a cold front knocks temperatures back Wednesday and brings Prowers County its best rain chance in days.
Monday will be mostly sunny in Lamar, with a high near 91, according to the National Weather Service office in Pueblo. A southwest wind of 5 to 15 mph will shift to the south-southeast in the afternoon. Monday night will be mostly clear, with a low around 62 and a south-southeast wind of 5 to 15 mph.
"The upper ridge will build back in over our area on Monday, kicking the monsoon plume to our west and giving us a slightly drier day," a meteorologist with the National Weather Service in Pueblo wrote in Sunday's Area Forecast Discussion. Forecasters said high temperatures will climb across the board through the week, reaching the upper 90s over the eastern plains.
No warnings in effect, but heat is the story
The Pueblo forecast office listed no watches, warnings or advisories in effect as of late Sunday, and no red flag warning covered Prowers County or zone 236. A severe thunderstorm watch for the plains expired at 9 p.m. Sunday as storms moved east into Kansas.
With Tuesday's high forecast near 98 and afternoon winds remaining light to moderate, conditions across Prowers County will be hot and dry but short of the wind thresholds that typically drive fire weather headlines. Forecasters said an upper-level high building over the Four Corners will keep the region dry through midweek, with a low but non-zero chance of triple-digit readings by the weekend.
Lamar, Colo. — Five-day forecast (Aug. 17-21, 2026)
Source: National Weather Service, Pueblo — Issued Aug. 16, 2026
| Period | Sky Conditions | High/Low | Wind |
|---|---|---|---|
| Monday | Mostly sunny | High 91 | Southwest 5 to 15 mph, becoming south-southeast in the afternoon |
| Monday Night | Mostly clear | Low 62 | South-southeast 5 to 15 mph |
| Tuesday | Sunny | High 98 | West-southwest 5 to 10 mph |
| Tuesday Night | Mostly clear | Low 63 | South 5 to 10 mph, becoming north-northeast in the evening |
| Wednesday | Mostly sunny | High 89 | North-northeast 10 to 15 mph, becoming east in the afternoon |
| Wednesday Night | Chance of showers and thunderstorms before midnight, then a slight chance of showers; partly cloudy (40%) | Low 61 | East 5 to 10 mph |
| Thursday | Sunny | High 91 | East 5 to 10 mph |
| Thursday Night | Slight chance of showers and thunderstorms before midnight (20%), then mostly clear | Low 62 | East-southeast 5 to 10 mph |
| Friday | Sunny | High 97 | South-southeast 5 to 10 mph |
| Friday Night | Mostly clear | Low 64 | Southeast 10 to 15 mph |
(Kiowa County Press)
Tuesday and Wednesday
Tuesday will be the hottest day of the week in Lamar, with sunny skies, a high near 98 and a west-southwest wind of 5 to 10 mph. Tuesday night stays mostly clear with a low around 63, as winds turn to the north-northeast during the evening ahead of an approaching front.
Wednesday will be mostly sunny and noticeably cooler, with a high near 89 and a north-northeast wind of 10 to 15 mph becoming east in the afternoon. A 40 percent chance of showers and thunderstorms arrives Wednesday night, mainly before midnight, with partly cloudy skies afterward and a low around 61.
Extended outlook: Thursday and Friday
Thursday returns to full sunshine with a high near 91 and a light east wind. A 20 percent chance of showers and thunderstorms is in the forecast Thursday evening, followed by mostly clear skies and a low around 62.
Friday brings the heat back, with sunny skies and a high near 97 under a south-southeast wind of 5 to 10 mph, and a mostly clear, mild night with a low around 64. Forecasters in Pueblo said the ridge should hold into the weekend, keeping the eastern plains hot and mostly rain-free.
With highs near or above the mid-90s three of the five days, residents should limit strenuous outdoor activity during the afternoon, check on older neighbors and never leave children or pets in parked vehicles.
