Fort Lupton weather by month
What a typical year looks like in Fort Lupton, Colorado: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at BRIGHTON 3 SE, 16 km from Fort Lupton; records cover 1973–2026.
The year at a glance
- Precipitation a year
- 14.1 in358 mm
- Snow a year
- 35 in88 cm
- Last spring freeze
- May 4
- First fall freeze
- Oct 6
- Heating degree days
- 5,964
- Cooling degree days
- 752
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −6°−21° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Fort Lupton in January
Highs average 44°7° and lows 16°−9°, with 0.42 in11 mm of precipitation and 5 in13 cm of snow in a typical January.
- Record high
- 74°23° (1982)
- Record low
- −23°−31° (2024)
- Heating degree days
- 1077
- Cooling degree days
- 0
Fort Lupton in February
Highs average 46°8° and lows 19°−7°, with 0.43 in11 mm of precipitation and 5 in13 cm of snow in a typical February.
- Record high
- 80°27° (2017)
- Record low
- −24°−31° (1989)
- Heating degree days
- 918
- Cooling degree days
- 0
Fort Lupton in March
Highs average 56°13° and lows 27°−3°, with 0.98 in25 mm of precipitation and 6 in15 cm of snow in a typical March.
- Record high
- 90°32° (2026)
- Record low
- −13°−25° (2002)
- Heating degree days
- 735
- Cooling degree days
- 0
Fort Lupton in April
Highs average 63°17° and lows 34°1°, with 1.8 in45 mm of precipitation and 3 in8 cm of snow in a typical April.
- Record high
- 91°33° (2012)
- Record low
- −8°−22° (1975)
- Heating degree days
- 499
- Cooling degree days
- 1
Fort Lupton in May
Highs average 72°22° and lows 43°6°, with 2.4 in60 mm of precipitation and 0.5 in1.3 cm of snow in a typical May.
- Record high
- 99°37° (2003)
- Record low
- 19°−7° (2010)
- Heating degree days
- 253
- Cooling degree days
- 22
Fort Lupton in June
Highs average 84°29° and lows 52°11°, with 1.4 in36 mm of precipitation in a typical June.
- Record high
- 104°40° (2006)
- Record low
- 34°1° (1998)
- Heating degree days
- 45
- Cooling degree days
- 142
Fort Lupton in July
Highs average 90°32° and lows 58°15°, with 1.7 in44 mm of precipitation in a typical July.
- Record high
- 105°41° (2005)
- Record low
- 44°7° (1994)
- Heating degree days
- 5
- Cooling degree days
- 287
Fort Lupton in August
Highs average 88°31° and lows 56°14°, with 1.8 in45 mm of precipitation in a typical August.
- Record high
- 104°40° (2026)
- Record low
- 41°5° (1978)
- Heating degree days
- 9
- Cooling degree days
- 226
Fort Lupton in September
Highs average 80°27° and lows 47°9°, with 1.2 in30 mm of precipitation and 0.2 in0.5 cm of snow in a typical September.
- Record high
- 100°38° (2020)
- Record low
- 19°−7° (1985)
- Heating degree days
- 114
- Cooling degree days
- 72
Fort Lupton in OctoberThis month
Highs average 66°19° and lows 35°2°, with 1 in26 mm of precipitation and 3 in8 cm of snow in a typical October.
- Record high
- 90°32° (1991)
- Record low
- 0°−18° (1997)
- Heating degree days
- 453
- Cooling degree days
- 2
Fort Lupton in November
Highs average 53°12° and lows 25°−4°, with 0.69 in18 mm of precipitation and 6 in15 cm of snow in a typical November.
- Record high
- 84°29° (2025)
- Record low
- −14°−26° (1993)
- Heating degree days
- 776
- Cooling degree days
- 0
Fort Lupton in December
Highs average 44°7° and lows 16°−9°, with 0.37 in9.4 mm of precipitation and 5 in13 cm of snow in a typical December.
- Record high
- 77°25° (2025)
- Record low
- −26°−32° (1990)
- Heating degree days
- 1080
- Cooling degree days
- 0
UniColorado Heating & Cooling, a Denver HVAC installer
UniColorado Heating & Cooling installs heat pumps, furnaces and air conditioning across the Front Range. 12,000+ heat pumps installed since 2014.