Fort Thomas weather by month
What a typical year looks like in Fort Thomas, Arizona: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Fort Thomas 2 SW, 3 km from Fort Thomas; records cover 1966–2026.
The year at a glance
- Precipitation a year
- 10.2 in259 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 2
- First fall freeze
- Nov 5
- Heating degree days
- 2,591
- Cooling degree days
- 2,430
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 17°−8° (heating, 99%) and 107°42° (cooling, 1%).
Month by month
Fort Thomas in January
Highs average 61°16° and lows 28°−2°, with 1 in26 mm of precipitation in a typical January.
- Record high
- 81°27° (1971)
- Record low
- 3°−16° (1987)
- Heating degree days
- 629
- Cooling degree days
- 0
Fort Thomas in February
Highs average 66°19° and lows 32°0°, with 0.98 in25 mm of precipitation in a typical February.
- Record high
- 89°32° (2026)
- Record low
- 3°−16° (1994)
- Heating degree days
- 449
- Cooling degree days
- 0
Fort Thomas in March
Highs average 74°24° and lows 37°3°, with 0.6 in15 mm of precipitation in a typical March.
- Record high
- 103°39° (2026)
- Record low
- 11°−12° (2002)
- Heating degree days
- 298
- Cooling degree days
- 4
Fort Thomas in April
Highs average 82°28° and lows 44°6°, with 0.25 in6.4 mm of precipitation in a typical April.
- Record high
- 101°38° (2025)
- Record low
- 23°−5° (1973)
- Heating degree days
- 112
- Cooling degree days
- 49
Fort Thomas in May
Highs average 91°33° and lows 53°11°, with 0.37 in9.4 mm of precipitation in a typical May.
- Record high
- 107°42° (2002)
- Record low
- 29°−2° (1967)
- Heating degree days
- 20
- Cooling degree days
- 222
Fort Thomas in June
Highs average 100°38° and lows 62°17°, with 0.15 in3.8 mm of precipitation in a typical June.
- Record high
- 114°46° (2016)
- Record low
- 40°4° (1998)
- Heating degree days
- 0
- Cooling degree days
- 486
Fort Thomas in July
Highs average 100°38° and lows 71°21°, with 1.7 in44 mm of precipitation in a typical July.
- Record high
- 114°46° (2020)
- Record low
- 42°6° (1969)
- Heating degree days
- 0
- Cooling degree days
- 629
Fort Thomas in August
Highs average 98°36° and lows 69°20°, with 1.9 in47 mm of precipitation in a typical August.
- Record high
- 116°47° (2025)
- Record low
- 50°10° (1979)
- Heating degree days
- 0
- Cooling degree days
- 564
Fort Thomas in September
Highs average 93°34° and lows 62°17°, with 1.1 in28 mm of precipitation in a typical September.
- Record high
- 107°42° (2019)
- Record low
- 39°4° (1978)
- Heating degree days
- 1
- Cooling degree days
- 377
Fort Thomas in OctoberThis month
Highs average 84°29° and lows 48°9°, with 0.73 in19 mm of precipitation in a typical October.
- Record high
- 100°38° (2003)
- Record low
- 19°−7° (2019)
- Heating degree days
- 70
- Cooling degree days
- 95
Fort Thomas in November
Highs average 71°22° and lows 35°2°, with 0.5 in13 mm of precipitation in a typical November.
- Record high
- 93°34° (1988)
- Record low
- 7°−14° (1992)
- Heating degree days
- 364
- Cooling degree days
- 4
Fort Thomas in December
Highs average 60°16° and lows 28°−2°, with 0.92 in23 mm of precipitation in a typical December.
- Record high
- 80°27° (1970)
- Record low
- 8°−13° (1978)
- Heating degree days
- 648
- Cooling degree days
- 0