Grantsville Weather Forecast
- 65
- 80
Rain Showers
- 57
- 77
Partly Sunny
- 64
- 80
Partly Sunny
- 63
- 80
Rain Showers
- 54
- 74
Chance Rain Showers
- 56
- 72
Mostly Sunny
Today 18 Jul Eastern Garrett
Areas of smoke with patchy fog this morning. Partly sunny with scattered Showers and Thunderstorms this Morning, then mostly cloudy with Showers and scattered Thunderstorms this afternoon. Some Thunderstorms may produce small Hail, frequent Lightning, and heavy Rainfall, then some Thunderstorms may be severe with damaging Winds, small Hail, frequent Lightning, and heavy rainfall this afternoon. Highs around 90. Except around 80 at the higher Elevations. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 80 percent.
Tonight 18 Jul Eastern Garrett
Mostly cloudy. Numerous Showers and scattered Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Some Thunderstorms may be severe with damaging Winds, small Hail, heavy Rainfall, and frequent lightning in the evening. Lows in the mid 60s. West Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.
Grantsville Temperature Statistics
July Temperature
Garrett County Airport (12.4 miles)
Lowest 13 July, 2026
60.8 °FAverage July
72.5 °FHighest 2 July, 2026
86 °F
Climate (2021–2026)
Garrett County Airport (12.4 miles)
Average Low 2021–2026
42 °FAverage 2021–2026
49 °FAverage High 2021–2026
56.9 °F