McAllister CDP, Montana

Official LSAD Designation: McAllister CDP • Census GEOID: 3046225 • Madison County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for McAllister CDP.

Reference Weather Station: NORRIS MADISON PWR HOUSE, MT US (ID: USC00246157) • Located 5.7 miles from community center • Elevation: 1,446.3 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	38.9°	23.8°	31.3°	0.53"
February	41.5°	24.5°	33.0°	0.74"
March	49.6°	30.3°	39.9°	1.17"
April	56.8°	35.6°	46.2°	2.26"
May	66.2°	43.4°	54.8°	3.00"
June	75.0°	50.0°	62.5°	3.17"
July	85.4°	57.1°	71.3°	1.32"
August	84.9°	56.2°	70.5°	1.41"
September	75.3°	48.5°	61.9°	1.44"
October	60.1°	38.8°	49.5°	1.69"
November	46.6°	30.2°	38.4°	0.81"
December	38.1°	23.5°	30.8°	0.82"

2010–2025, completed calendar years only.

NOAA station NORRIS MADISON PWR HOUSE, MT US (ID: USC00246157) • 5.7 miles from community center .

This is the same reference station used for monthly normals.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

Annual temperature data table (°F)

Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year	Annual mean (°F)	Annual mean of daily highs (°F)	Annual mean of daily lows (°F)
2010	Unavailable	Unavailable	38.6
2011	Unavailable	Unavailable	Unavailable
2012	51.9	62.8	40.9
2013	49.3	59.7	38.8
2014	49.2	59.6	38.7
2015	51.5	62.2	40.8
2016	51.1	61.6	40.6
2017	50.1	60.7	39.6
2018	49.5	60.1	38.8
2019	46.7	56.9	36.6
2020	49.6	60.1	39.1
2021	50.3	60.8	39.9
2022	48.3	59.1	37.6
2023	49.1	58.8	39.3
2024	51.1	61.6	40.6
2025	51.1	61.5	40.6

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.