Expires:202605181800;;763278 FPUS55 KGJT 181059 ZFPGJT Zone Forecast for Western Colorado and Eastern Utah NATIONAL WEATHER SERVICE Grand Junction CO 458 AM MDT Mon May 18 2026 This is an automatically generated product based on a representative point of forecast data within each zone. The forecast may not be representative of the exact location you are interested in. For a more specific forecast...please visit www.weather.gov/grandjunction. UTZ027-181800- Arches/Grand Flat- Including the cities of Moab, Arches National Park, Castle Valley, and Thompson Springs 458 AM MDT Mon May 18 2026 .TODAY...Cloudy with showers likely in the morning, then mostly sunny with a slight chance of showers in the afternoon. Cooler. Highs 55 to 65. Southwest winds 10 to 15 mph in the morning, becoming light. Gusts up to 25 mph. Chance of rain 60 percent. .TONIGHT...Mostly clear. Not as cool. Lows in the 30s. .TUESDAY...Sunny. Highs in the 60s. .TUESDAY NIGHT...Mostly clear. Lows 35 to 45. .WEDNESDAY...Sunny. Highs 65 to 75. .WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows in the 40s. Highs 75 to 85. .FRIDAY...Mostly sunny. Highs 75 to 85. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows 45 to 55. Highs in the 80s. .SATURDAY NIGHT...Partly cloudy. Lows in the 50s. .SUNDAY...Sunny. Highs 85 to 95. $$