<body><div><figure><img src="https://img.particlenews.com/image.php?type=thumbnail_580x000&amp;url=0Y4RCI_1DQYNjgH00" alt="https://img.particlenews.com/image.php?url=0Y4RCI_1DQYNjgH00" width="1440" height="1037" ><figcaption>A sundog, technically known as parhelia formed by ice crystals reflecting sunlight, is seen in central Casper on March 1, 2026. (Dan Cepeda, Oil City News)</figcaption></figure>CASPER, Wyo. — Monsoonal moisture is expected to bring a volatile mix of heavy rain, thunderstorms, and near-triple-digit heat to Natrona County over the coming days, according to the National Weather Service in Riverton. Weather forecasters noted Saturday that atmospheric moisture levels in central Wyoming are currently tracking at twice the normal amount for this time of year. While Casper and neighboring communities have experienced a brief dry spell, meteorological models show the wet weather system expanding eastward, bringing a renewed chance of showers and thunderstorms to the area through Saturday night. The region will face a dual threat of severe weather and intense heat through Monday. High temperatures across lower elevations are expected to climb into the 80s and 90s. Forecasters warned that Sunday and Monday will likely be the hottest days of the stretch, with a persistent high-pressure ridge threatening to push temperatures close to 100 degrees in the state’s warmer basins. A brief lull in storm activity is anticipated Sunday as the deepest moisture temporarily shifts south and east. However, the respite will be short-lived. By Monday night, the monsoonal plume is projected to surge back across the region, triggering a prolonged wet cycle that will stretch through the middle of the week. National Weather Service meteorologists have identified Wednesday as the primary day of concern for widespread flooding. Advanced weather models indicate that atmospheric moisture could reach historic levels. If current projections hold, precipitable water measurements at the Riverton station could hit 1.5 inches, which would shatter the previous record of 1.41 inches. The arrival of an atmospheric disturbance on Wednesday is expected to intensify these storms further. Local emergency officials and residents are urged to monitor updates closely, as the combination of consecutive stormy days and record-moisture levels increases the risk of flash flooding. A cool down to more seasonable temperatures is expected to arrive by the middle of next week, driven by thick cloud cover and persistent rainfall. Forecasters anticipate the damp conditions will finally begin to clear out late Thursday, ahead of a drier weather pattern next weekend. <h2>Detailed Forecast</h2><ul><li>Today – Increasing clouds and hot, with a high near 98. East southeast wind 3 – 7 mph.</li><li>Tonight – Partly cloudy, with a low around 64. East northeast wind 8 – 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.</li><li>Sunday – A 20 percent chance of showers and thunderstorms after 5 p.m. Sunny and hot, with a high near 97. Light and variable wind becoming northwest 5 – 7 mph in the morning.</li><li>Sunday Night – Partly cloudy, with a low around 63. Northeast wind 5 – 7 mph becoming calm after midnight.</li><li>Monday – Sunny, with a high near 96. Light and variable wind becoming northeast 8 – 13 mph in the morning. Winds could gust as high as 20 mph.</li><li>Monday Night – A 10 percent chance of showers and thunderstorms before 9 p.m. Partly cloudy, with a low around 61. East northeast wind 8 – 14 mph, with gusts as high as 24 mph.</li><li>Tuesday – A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 92. East wind 7 – 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.</li><li>Tuesday Night – A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62.</li><li>Wednesday – Showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 92. Chance of precipitation is 60%.</li><li>Wednesday Night – Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.</li><li>Thursday – Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87.</li><li>Thursday Night – A chance of showers and thunderstorms. Mostly cloudy, with a low around 59.</li><li>Friday – A chance of showers and thunderstorms. Mostly sunny, with a high near 88.</li></ul>More on the weather is available at the National Weather Service website.</div></body>

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CASPER, Wyo. — Monsoonal moisture is expected to bring a volatile mix of heavy rain, thunderstorms, and near-triple-digit heat to Natrona County over the coming days, according to the National Weather Service in Riverton. Weather forecasters noted Saturday that atmospheric moisture levels in central Wyoming are currently tracking at...

Casper braces for volatile heat, possible rain this weekend

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CASPER, Wyo. — Monsoonal moisture is expected to bring a volatile mix of heavy rain, thunderstorms, and near-triple-digit heat to Natrona County over the c

Casper braces for volatile heat, possible rain this weekend

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