Altoona weather by month
What a typical year looks like in Altoona, Pennsylvania: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Altoona Blair County Airport, 24 km from Altoona; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 36.7 in931 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 24
- First fall freeze
- Oct 15
- Heating degree days
- 5,764
- Cooling degree days
- 692
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 4°−16° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Altoona in January
Highs average 36°2° and lows 21°−6°, with 2.2 in57 mm of precipitation in a typical January.
- Record high
- 74°23° (1950)
- Record low
- −25°−32° (1994)
- Heating degree days
- 1134
- Cooling degree days
- 0
Altoona in February
Highs average 39°4° and lows 23°−5°, with 2 in50 mm of precipitation in a typical February.
- Record high
- 76°24° (2018)
- Record low
- −11°−24° (1961)
- Heating degree days
- 962
- Cooling degree days
- 0
Altoona in March
Highs average 48°9° and lows 30°−1°, with 3 in76 mm of precipitation in a typical March.
- Record high
- 85°29° (1998)
- Record low
- 1°−17° (1960)
- Heating degree days
- 815
- Cooling degree days
- 1
Altoona in April
Highs average 61°16° and lows 40°4°, with 3.3 in83 mm of precipitation in a typical April.
- Record high
- 89°32° (1962)
- Record low
- 12°−11° (1982)
- Heating degree days
- 445
- Cooling degree days
- 7
Altoona in May
Highs average 71°22° and lows 50°10°, with 3.7 in94 mm of precipitation in a typical May.
- Record high
- 94°34° (1969)
- Record low
- 25°−4° (1966)
- Heating degree days
- 193
- Cooling degree days
- 47
Altoona in June
Highs average 79°26° and lows 58°15°, with 3.4 in87 mm of precipitation in a typical June.
- Record high
- 97°36° (1953)
- Record low
- 32°0° (1966)
- Heating degree days
- 37
- Cooling degree days
- 142
Altoona in July
Highs average 83°28° and lows 62°17°, with 3.5 in88 mm of precipitation in a typical July.
- Record high
- 103°39° (2011)
- Record low
- 41°5° (1966)
- Heating degree days
- 4
- Cooling degree days
- 232
Altoona in August
Highs average 81°27° and lows 60°16°, with 3.3 in83 mm of precipitation in a typical August.
- Record high
- 97°36° (1948)
- Record low
- 36°2° (1982)
- Heating degree days
- 12
- Cooling degree days
- 184
Altoona in September
Highs average 74°23° and lows 53°12°, with 4 in101 mm of precipitation in a typical September.
- Record high
- 97°36° (1953)
- Record low
- 29°−2° (1957)
- Heating degree days
- 108
- Cooling degree days
- 69
Altoona in OctoberThis month
Highs average 63°17° and lows 43°6°, with 2.9 in74 mm of precipitation in a typical October.
- Record high
- 90°32° (2019)
- Record low
- 20°−7° (1969)
- Heating degree days
- 383
- Cooling degree days
- 10
Altoona in November
Highs average 51°10° and lows 34°1°, with 2.9 in72 mm of precipitation in a typical November.
- Record high
- 79°26° (1950)
- Record low
- 7°−14° (1950)
- Heating degree days
- 681
- Cooling degree days
- 0
Altoona in December
Highs average 40°4° and lows 26°−3°, with 2.6 in65 mm of precipitation in a typical December.
- Record high
- 74°23° (1998)
- Record low
- −11°−24° (1983)
- Heating degree days
- 990
- Cooling degree days
- 0