Ten Sleep weather by month
What a typical year looks like in Ten Sleep, Wyoming: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Tensleep 4ne, 6 km from Ten Sleep; records cover 1964–2026.
The year at a glance
- Precipitation a year
- 13.7 in348 mm
- Snow a year
- 52 in131 cm
- Last spring freeze
- May 9
- First fall freeze
- Oct 3
- Heating degree days
- 6,870
- Cooling degree days
- 615
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −7°−22° (heating, 99%) and 96°36° (cooling, 1%).
Month by month
Ten Sleep in January
Highs average 37°3° and lows 15°−10°, with 0.6 in15 mm of precipitation and 9 in23 cm of snow in a typical January.
- Record high
- 64°18° (1981)
- Record low
- −28°−33° (2024)
- Heating degree days
- 1217
- Cooling degree days
- 0
Ten Sleep in February
Highs average 39°4° and lows 17°−8°, with 0.65 in17 mm of precipitation and 10 in24 cm of snow in a typical February.
- Record high
- 66°19° (1982)
- Record low
- −31°−35° (1989)
- Heating degree days
- 1034
- Cooling degree days
- 0
Ten Sleep in March
Highs average 51°11° and lows 27°−3°, with 0.99 in25 mm of precipitation and 6 in14 cm of snow in a typical March.
- Record high
- 81°27° (2026)
- Record low
- −15°−26° (2019)
- Heating degree days
- 815
- Cooling degree days
- 0
Ten Sleep in April
Highs average 59°15° and lows 34°1°, with 1.5 in39 mm of precipitation and 5 in14 cm of snow in a typical April.
- Record high
- 87°31° (2000)
- Record low
- 5°−15° (2022)
- Heating degree days
- 563
- Cooling degree days
- 1
Ten Sleep in May
Highs average 69°20° and lows 42°6°, with 2.4 in61 mm of precipitation and 1.1 in2.8 cm of snow in a typical May.
- Record high
- 91°33° (1987)
- Record low
- 20°−7° (1967)
- Heating degree days
- 310
- Cooling degree days
- 14
Ten Sleep in June
Highs average 80°26° and lows 51°10°, with 1.6 in41 mm of precipitation in a typical June.
- Record high
- 100°38° (1970)
- Record low
- 31°−1° (1970)
- Heating degree days
- 86
- Cooling degree days
- 88
Ten Sleep in July
Highs average 88°31° and lows 58°14°, with 0.9 in23 mm of precipitation in a typical July.
- Record high
- 105°41° (2005)
- Record low
- 38°3° (1983)
- Heating degree days
- 10
- Cooling degree days
- 253
Ten Sleep in August
Highs average 86°30° and lows 56°13°, with 0.66 in17 mm of precipitation in a typical August.
- Record high
- 101°38° (2026)
- Record low
- 32°0° (2019)
- Heating degree days
- 19
- Cooling degree days
- 207
Ten Sleep in September
Highs average 76°25° and lows 46°8°, with 1.5 in37 mm of precipitation and 0.3 in0.8 cm of snow in a typical September.
- Record high
- 98°37° (2022)
- Record low
- 15°−9° (1984)
- Heating degree days
- 162
- Cooling degree days
- 49
Ten Sleep in OctoberThis month
Highs average 61°16° and lows 35°1°, with 1.4 in35 mm of precipitation and 4 in9 cm of snow in a typical October.
- Record high
- 88°31° (2002)
- Record low
- −6°−21° (2020)
- Heating degree days
- 541
- Cooling degree days
- 3
Ten Sleep in November
Highs average 46°8° and lows 24°−4°, with 0.77 in20 mm of precipitation and 8 in19 cm of snow in a typical November.
- Record high
- 74°23° (1988)
- Record low
- −16°−27° (1985)
- Heating degree days
- 897
- Cooling degree days
- 0
Ten Sleep in December
Highs average 36°2° and lows 15°−9°, with 0.71 in18 mm of precipitation and 10 in24 cm of snow in a typical December.
- Record high
- 66°19° (1980)
- Record low
- −34°−37° (1990)
- Heating degree days
- 1216
- Cooling degree days
- 0