Buffalo weather by month
What a typical year looks like in Buffalo, Wyoming: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Buffalo Johnson County Airport, 5 km from Buffalo; records cover 1998–2026.
The year at a glance
- Precipitation a year
- 12.5 in319 mm
- Snow a year
- Rare
- Last spring freeze
- May 13
- First fall freeze
- Oct 3
- Heating degree days
- 7,287
- Cooling degree days
- 528
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −8°−22° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Buffalo in January
Highs average 38°3° and lows 17°−8°, with 0.23 in5.8 mm of precipitation in a typical January.
- Record high
- 67°19° (2015)
- Record low
- −25°−32° (2024)
- Heating degree days
- 1164
- Cooling degree days
- 0
Buffalo in February
Highs average 37°3° and lows 18°−8°, with 0.24 in6.1 mm of precipitation in a typical February.
- Record high
- 69°21° (2015)
- Record low
- −22°−30° (2014)
- Heating degree days
- 1057
- Cooling degree days
- 0
Buffalo in March
Highs average 46°8° and lows 25°−4°, with 0.73 in19 mm of precipitation in a typical March.
- Record high
- 82°28° (2026)
- Record low
- −15°−26° (2019)
- Heating degree days
- 904
- Cooling degree days
- 0
Buffalo in April
Highs average 53°12° and lows 32°0°, with 1.5 in37 mm of precipitation in a typical April.
- Record high
- 84°29° (2018)
- Record low
- 2°−17° (2020)
- Heating degree days
- 665
- Cooling degree days
- 0
Buffalo in May
Highs average 63°17° and lows 41°5°, with 2.7 in69 mm of precipitation in a typical May.
- Record high
- 93°34° (2026)
- Record low
- 17°−8° (2005)
- Heating degree days
- 412
- Cooling degree days
- 7
Buffalo in June
Highs average 74°23° and lows 50°10°, with 2.1 in53 mm of precipitation in a typical June.
- Record high
- 104°40° (2021)
- Record low
- 31°−1° (2009)
- Heating degree days
- 150
- Cooling degree days
- 57
Buffalo in July
Highs average 85°29° and lows 58°14°, with 1.6 in41 mm of precipitation in a typical July.
- Record high
- 105°41° (2026)
- Record low
- 41°5° (2008)
- Heating degree days
- 20
- Cooling degree days
- 214
Buffalo in August
Highs average 83°28° and lows 57°14°, with 0.75 in19 mm of precipitation in a typical August.
- Record high
- 103°39° (2001)
- Record low
- 36°2° (2002)
- Heating degree days
- 37
- Cooling degree days
- 190
Buffalo in September
Highs average 72°22° and lows 47°8°, with 1.2 in30 mm of precipitation in a typical September.
- Record high
- 100°38° (2022)
- Record low
- 19°−7° (2014)
- Heating degree days
- 213
- Cooling degree days
- 57
Buffalo in OctoberThis month
Highs average 57°14° and lows 35°2°, with 1 in26 mm of precipitation in a typical October.
- Record high
- 89°32° (2011)
- Record low
- −3°−19° (2019)
- Heating degree days
- 586
- Cooling degree days
- 3
Buffalo in November
Highs average 45°7° and lows 25°−4°, with 0.36 in9.1 mm of precipitation in a typical November.
- Record high
- 80°27° (1999)
- Record low
- −13°−25° (2010)
- Heating degree days
- 900
- Cooling degree days
- 0
Buffalo in December
Highs average 37°3° and lows 17°−8°, with 0.17 in4.3 mm of precipitation in a typical December.
- Record high
- 78°26° (2021)
- Record low
- −24°−31° (1998)
- Heating degree days
- 1179
- Cooling degree days
- 0