Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Southern Plains to the Great Lakes
Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over the Northern Mariana Islands. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes through Tuesday. Heavy snow is expected in the Pacific Northwest. Read More >
| NWS Forecast for: Northwestern San Juan Mountains Issued by: National Weather Service Grand Junction, CO Last Update: 1034 PM MDT Mon Apr 13 2026 | |
Overnight: Snow showers with a chance of thunderstorms late in the evening, then snow showers after midnight. Snow accumulation around one inch. Lows 25 to 35. South winds 10 to 15 mph with gusts up to 20 mph. Tuesday: Snow showers. New snow accumulation 1 to 3 inches. Highs in the 30s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Tuesday Night: Mostly cloudy. Numerous snow showers in the evening, then isolated snow showers after midnight. No new snow accumulation. Lows 15 to 25. Chance of snow 60 percent. Wednesday: Mostly sunny. Highs in the 40s. West winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Wednesday Night: Mostly clear. Lows in the 20s. South winds 10 to 15 mph. Gusts up to 20 mph in the evening. Thursday: Mostly sunny in the morning, then becoming partly sunny. Highs in the 40s. Thursday Night: Mostly cloudy. A chance of snow showers after midnight. Lows in the 20s. Chance of snow 40 percent. Friday: Mostly cloudy with snow showers likely in the morning, then partly sunny with a chance of snow showers in the afternoon. Cooler. Light snow accumulation possible. Highs 25 to 35. Chance of snow 70 percent. Friday Night: Partly cloudy. Slight chance of snow showers in the evening. Lows 5 to 15. Chance of snow 20 percent. Saturday And Saturday Night: Mostly clear. Highs in the 40s. Lows 15 to 25. Sunday And Sunday Night: Partly cloudy. Highs in the 50s. Lows 25 to 35. Monday: Mostly sunny. Slight chance of rain and snow showers in the afternoon. Highs in the 50s. Chance of precipitation 20 percent. | |
| Zone Forecast: Northwestern San Juan Mountains | |
Visit your local NWS office at: https://www.weather.gov/gjt |