Grantsville weather by month
What a typical year looks like in Grantsville, Utah: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at TOOELE, 15 km from Grantsville; records cover 1896–2026.
The year at a glance
- Precipitation a year
- 18.4 in468 mm
- Snow a year
- 75 in191 cm
- Last spring freeze
- Apr 29
- First fall freeze
- Oct 18
- Heating degree days
- 5,790
- Cooling degree days
- 1,085
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 6°−14° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
Grantsville in January
Highs average 39°4° and lows 21°−6°, with 1.5 in38 mm of precipitation and 14 in36 cm of snow in a typical January.
- Record high
- 67°19° (2003)
- Record low
- −15°−26° (1937)
- Heating degree days
- 1096
- Cooling degree days
- 0
Grantsville in February
Highs average 44°7° and lows 24°−4°, with 1.7 in42 mm of precipitation and 15 in37 cm of snow in a typical February.
- Record high
- 70°21° (1972)
- Record low
- −16°−27° (1933)
- Heating degree days
- 860
- Cooling degree days
- 0
Grantsville in March
Highs average 54°12° and lows 32°0°, with 2.2 in56 mm of precipitation and 11 in28 cm of snow in a typical March.
- Record high
- 82°28° (2022)
- Record low
- 3°−16° (1945)
- Heating degree days
- 682
- Cooling degree days
- 0
Grantsville in April
Highs average 61°16° and lows 38°3°, with 2.3 in59 mm of precipitation and 6 in15 cm of snow in a typical April.
- Record high
- 88°31° (2000)
- Record low
- 14°−10° (1920)
- Heating degree days
- 474
- Cooling degree days
- 3
Grantsville in May
Highs average 71°22° and lows 46°8°, with 2.4 in60 mm of precipitation and 0.4 in1 cm of snow in a typical May.
- Record high
- 97°36° (2003)
- Record low
- 21°−6° (1965)
- Heating degree days
- 238
- Cooling degree days
- 41
Grantsville in June
Highs average 82°28° and lows 56°13°, with 1.1 in27 mm of precipitation in a typical June.
- Record high
- 104°40° (2021)
- Record low
- 27°−3° (1995)
- Heating degree days
- 62
- Cooling degree days
- 174
Grantsville in July
Highs average 91°33° and lows 64°18°, with 0.8 in20 mm of precipitation in a typical July.
- Record high
- 106°41° (2000)
- Record low
- 32°0° (1902)
- Heating degree days
- 4
- Cooling degree days
- 399
Grantsville in August
Highs average 90°32° and lows 63°17°, with 0.68 in17 mm of precipitation in a typical August.
- Record high
- 105°41° (2000)
- Record low
- 36°2° (1910)
- Heating degree days
- 4
- Cooling degree days
- 348
Grantsville in September
Highs average 79°26° and lows 52°11°, with 1.1 in28 mm of precipitation in a typical September.
- Record high
- 102°39° (2022)
- Record low
- 26°−3° (1909)
- Heating degree days
- 92
- Cooling degree days
- 113
Grantsville in OctoberThis month
Highs average 64°18° and lows 40°5°, with 1.5 in38 mm of precipitation and 1.9 in4.8 cm of snow in a typical October.
- Record high
- 93°34° (1989)
- Record low
- 10°−12° (2019)
- Heating degree days
- 407
- Cooling degree days
- 7
Grantsville in November
Highs average 49°10° and lows 29°−2°, with 1.6 in40 mm of precipitation and 10 in26 cm of snow in a typical November.
- Record high
- 80°27° (1909)
- Record low
- −7°−22° (1955)
- Heating degree days
- 772
- Cooling degree days
- 0
Grantsville in December
Highs average 39°4° and lows 21°−6°, with 1.7 in44 mm of precipitation and 17 in44 cm of snow in a typical December.
- Record high
- 70°21° (1995)
- Record low
- −16°−27° (1990)
- Heating degree days
- 1099
- Cooling degree days
- 0