Prowers County faces a cool, breezy and increasingly wet week, with the National Weather Service in Pueblo calling for highs in the mid to upper 70s through Thursday and the best rain chances arriving Wednesday. Wind is the other story, with south-southeast gusts to 40 mph expected both Tuesday and Wednesday around Lamar.

Monday brings a 40 percent chance of showers and thunderstorms at Lamar, mainly before 7 a.m., as overnight storms exit the area. Skies start mostly cloudy and gradually become sunny, with a high near 75. East-southeast winds of 5 to 10 mph shift to the west during the morning. Monday night is mostly cloudy with a low around 55 and a 30 percent chance of showers and thunderstorms, mainly between 2 and 4 a.m.

The first half of the week stays below the 80-degree mark. "Both Mon and Tue are the coolest days out of the extended period, with high temps failing to hit 80F," a meteorologist with the National Weather Service in Pueblo wrote in Saturday's Area Forecast Discussion, pointing to temporary ridging across the Four Corners before a Pacific system boosts moisture and rain chances at midweek.

Wind and welcome rain for the Arkansas Valley

Wednesday offers Prowers County its best shot at meaningful rain, with forecasters calling for a tenth to a quarter of an inch and locally higher amounts in thunderstorms, followed by an 80 percent chance of showers Wednesday night. The rain would be welcome in a corner of the state where the Pueblo office reports moderate to exceptional drought continuing across south central and southeast Colorado.

No red flag warnings or fire weather watches are in effect for Prowers County or fire weather zone 236, and the Pueblo office listed no active watches, warnings or advisories. Despite the gusty winds Tuesday and Wednesday, cooler temperatures and rising humidity ahead of the midweek system should keep fire danger in check.

Lamar, Colo. — Five-day forecast (Sept. 21-25, 2026)

Source: National Weather Service, Pueblo — Issued 12:31 a.m. MDT Sept. 21, 2026

(Kiowa County Press)

Tuesday and Wednesday

Tuesday starts mostly cloudy and gradually becomes sunny, with a high near 78. It is the windiest day of the week: east winds of 10 to 15 mph turn south-southeast at 20 to 25 mph during the morning, with gusts as high as 40 mph. Tuesday night stays breezy and mostly cloudy with a low around 59 and a 20 percent chance of showers and thunderstorms before midnight.

Wednesday turns wet. A chance of showers gives way to showers likely and a possible thunderstorm after noon, with mostly cloudy skies, a high near 76 and a 60 percent chance of precipitation. Breezy south-southeast winds of 20 to 25 mph continue, gusting to 40 mph. Showers and a possible thunderstorm persist Wednesday night with an 80 percent chance of rain and a low around 57.

Extended outlook: Thursday and Friday

Thursday keeps rain in the forecast, with showers likely and a possible thunderstorm before noon, then a continued chance of showers and storms in the afternoon. Skies turn partly sunny with a high near 75 and a 60 percent chance of precipitation. South winds ease to 10 to 15 mph. Thursday night brings a 30 percent chance of showers and storms before midnight with a low around 56.

Friday is the warmest and driest day of the work week, with partly sunny skies, a high near 82 and south winds around 10 mph, followed by a partly cloudy low near 59. These numbers come from the current Weather Service seven-day point forecast rather than longer-range Climate Prediction Center outlooks, because both extended days fall inside the active forecast window.

High-profile vehicles on U.S. 50, U.S. 287 and Colorado 196 should expect difficult crosswinds Tuesday and Wednesday afternoons. Residents should also be alert for brief heavy rain and lightning with the stronger midweek storms, and avoid driving through flooded low-water crossings.