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Ault weather by month

What a typical year looks like in Ault, Colorado: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at GREELEY UNC, 21 km from Ault; records cover 1967–2026.

Today’s Ault forecast

The year at a glance

January: typical high 44.1°F, low 17.5°F, precipitation 0.45 in. February: typical high 47.7°F, low 20°F, precipitation 0.45 in. March: typical high 59.1°F, low 28.1°F, precipitation 0.91 in. April: typical high 66°F, low 35.3°F, precipitation 1.83 in. May: typical high 74.7°F, low 44.5°F, precipitation 2.65 in. June: typical high 85.8°F, low 53.6°F, precipitation 1.78 in. July: typical high 91.7°F, low 59.3°F, precipitation 1.61 in. August: typical high 89.2°F, low 57.3°F, precipitation 1.56 in. September: typical high 81.9°F, low 48.7°F, precipitation 1.13 in. October: typical high 67.8°F, low 36.6°F, precipitation 1.06 in. November: typical high 53.6°F, low 25.8°F, precipitation 0.67 in. December: typical high 43.4°F, low 17.8°F, precipitation 0.55 in.−30°−34°−10°−23°10°−12°30°−1°50°10°70°21°90°32°110°43°44°7°18°−8°Jan48°9°20°−7°Feb59°15°28°−2°Mar66°19°35°2°Apr75°24°45°7°May86°30°54°12°Jun92°33°59°15°Jul89°32°57°14°Aug82°28°49°9°Sep68°20°37°3°Oct54°12°26°−3°Nov43°6°18°−8°DecPrecipitation
Bars: typical low to high (official normals, 1991–2020) Record high Record low
Precipitation a year
14.7 in372 mm
Snow a year
35 in89 cm
Last spring freeze
May 3
First fall freeze
Oct 6
Heating degree days
5,579
Cooling degree days
896

Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −2°−19° (heating, 99%) and 101°38° (cooling, 1%).

Month by month

Ault in January

Highs average 44°7° and lows 18°−8°, with 0.45 in11 mm of precipitation and 6 in14 cm of snow in a typical January.

Record high
74°23° (1982)
Record low
−25°−32° (1984)
Heating degree days
1060
Cooling degree days
0

Ault in February

Highs average 48°9° and lows 20°−7°, with 0.45 in11 mm of precipitation and 5 in13 cm of snow in a typical February.

Record high
78°26° (2020)
Record low
−20°−29° (1989)
Heating degree days
872
Cooling degree days
0

Ault in March

Highs average 59°15° and lows 28°−2°, with 0.91 in23 mm of precipitation and 5 in13 cm of snow in a typical March.

Record high
94°34° (2026)
Record low
−10°−23° (2019)
Heating degree days
664
Cooling degree days
0

Ault in April

Highs average 66°19° and lows 35°2°, with 1.8 in46 mm of precipitation and 4 in9 cm of snow in a typical April.

Record high
92°33° (2006)
Record low
−3°−19° (1975)
Heating degree days
432
Cooling degree days
2

Ault in May

Highs average 75°24° and lows 45°7°, with 2.7 in67 mm of precipitation and 0.5 in1.3 cm of snow in a typical May.

Record high
101°38° (2003)
Record low
21°−6° (2013)
Heating degree days
202
Cooling degree days
35

Ault in June

Highs average 86°30° and lows 54°12°, with 1.8 in45 mm of precipitation in a typical June.

Record high
110°43° (2006)
Record low
34°1° (2007)
Heating degree days
31
Cooling degree days
172

Ault in July

Highs average 92°33° and lows 59°15°, with 1.6 in41 mm of precipitation in a typical July.

Record high
112°44° (2006)
Record low
42°6° (1971)
Heating degree days
2
Cooling degree days
328

Ault in August

Highs average 89°32° and lows 57°14°, with 1.6 in40 mm of precipitation in a typical August.

Record high
109°43° (2026)
Record low
41°5° (1968)
Heating degree days
6
Cooling degree days
262

Ault in September

Highs average 82°28° and lows 49°9°, with 1.1 in29 mm of precipitation and 0.5 in1.3 cm of snow in a typical September.

Record high
105°41° (2020)
Record low
17°−8° (1985)
Heating degree days
84
Cooling degree days
93

Ault in OctoberThis month

Highs average 68°20° and lows 37°3°, with 1.1 in27 mm of precipitation and 3 in8 cm of snow in a typical October.

Record high
93°34° (2024)
Record low
−2°−19° (2020)
Heating degree days
401
Cooling degree days
4

Ault in November

Highs average 54°12° and lows 26°−3°, with 0.67 in17 mm of precipitation and 5 in14 cm of snow in a typical November.

Record high
84°29° (2007)
Record low
−7°−22° (1972)
Heating degree days
759
Cooling degree days
0

Ault in December

Highs average 43°6° and lows 18°−8°, with 0.55 in14 mm of precipitation and 6 in14 cm of snow in a typical December.

Record high
76°24° (2007)
Record low
−24°−31° (1989)
Heating degree days
1066
Cooling degree days
0

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