Glendo weather by month
What a typical year looks like in Glendo, Wyoming: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Glendo Rsvr (usbr), 6 km from Glendo; records cover 2000–2026.
The year at a glance
- Precipitation a year
- 14.4 in367 mm
- Snow a year
- Rare
- Last spring freeze
- May 12
- First fall freeze
- Oct 3
- Heating degree days
- 6,882
- Cooling degree days
- 631
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −11°−24° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Glendo in January
Highs average 39°4° and lows 15°−10°, with 0.37 in9.4 mm of precipitation in a typical January.
- Record high
- 69°21° (2015)
- Record low
- −29°−34° (2023)
- Heating degree days
- 1183
- Cooling degree days
- 0
Glendo in February
Highs average 40°4° and lows 16°−9°, with 0.42 in11 mm of precipitation in a typical February.
- Record high
- 67°19° (2015)
- Record low
- −29°−34° (2006)
- Heating degree days
- 1046
- Cooling degree days
- 0
Glendo in March
Highs average 50°10° and lows 25°−4°, with 0.9 in23 mm of precipitation in a typical March.
- Record high
- 86°30° (2026)
- Record low
- −17°−27° (2022)
- Heating degree days
- 864
- Cooling degree days
- 0
Glendo in April
Highs average 58°14° and lows 32°0°, with 1.9 in49 mm of precipitation in a typical April.
- Record high
- 94°34° (2005)
- Record low
- 0°−18° (2005)
- Heating degree days
- 608
- Cooling degree days
- 0
Glendo in May
Highs average 67°20° and lows 42°5°, with 2.8 in71 mm of precipitation in a typical May.
- Record high
- 94°34° (2005)
- Record low
- 2°−17° (2000)
- Heating degree days
- 338
- Cooling degree days
- 12
Glendo in June
Highs average 79°26° and lows 52°11°, with 2 in50 mm of precipitation in a typical June.
- Record high
- 112°44° (2005)
- Record low
- −86°−66° (2007)
- Heating degree days
- 75
- Cooling degree days
- 85
Glendo in July
Highs average 88°31° and lows 59°15°, with 1.5 in39 mm of precipitation in a typical July.
- Record high
- 103°39° (2006)
- Record low
- −85°−65° (2007)
- Heating degree days
- 5
- Cooling degree days
- 263
Glendo in August
Highs average 86°30° and lows 57°14°, with 1.2 in29 mm of precipitation in a typical August.
- Record high
- 101°38° (2020)
- Record low
- −55°−48° (2006)
- Heating degree days
- 19
- Cooling degree days
- 212
Glendo in September
Highs average 77°25° and lows 47°8°, with 1.2 in29 mm of precipitation in a typical September.
- Record high
- 100°38° (2022)
- Record low
- 25°−4° (2000)
- Heating degree days
- 152
- Cooling degree days
- 57
Glendo in OctoberThis month
Highs average 61°16° and lows 34°1°, with 1.2 in31 mm of precipitation in a typical October.
- Record high
- 89°32° (2011)
- Record low
- −9°−23° (2019)
- Heating degree days
- 539
- Cooling degree days
- 2
Glendo in November
Highs average 48°9° and lows 23°−5°, with 0.47 in12 mm of precipitation in a typical November.
- Record high
- 77°25° (2008)
- Record low
- −62°−52° (2006)
- Heating degree days
- 874
- Cooling degree days
- 0
Glendo in December
Highs average 38°3° and lows 16°−9°, with 0.54 in14 mm of precipitation in a typical December.
- Record high
- 70°21° (2014)
- Record low
- −53°−47° (2006)
- Heating degree days
- 1179
- Cooling degree days
- 0