Fort Thomas, AZ climate
Fort Thomas has mild winters and scorching summers, with very little rain. A typical July afternoon reaches 100°, a January night drops to 31°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Fort Thomas feels like
Winter
Spring
Summer
Fall
Fort Thomas weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 62° | 31° | 0.9" | 0.2" | 5 | 0 | 42° – 51° |
| February | 66° | 35° | 0.9" | 0 | 4 | 0 | 45° – 56° |
| March | 74° | 40° | 0.6" | 0 | 3 | 0 | 50° – 62° |
| April | 82° | 47° | 0.3" | 0 | 2 | 0 | 58° – 70° |
| May | 91° | 55° | 0.2" | 0 | 2 | 0 | 67° – 78° |
| June | 100° | 65° | 0.2" | 0 | 2 | 0 | 77° – 86° |
| July | 100° | 72° | 1.7" | 0 | 8 | 0 | 83° – 89° |
| August | 98° | 70° | 2.0" | 0 | 8 | 0 | 81° – 90° |
| September | 94° | 63° | 1.1" | 0 | 4 | 0 | 74° – 82° |
| October | 84° | 50° | 0.7" | 0 | 4 | 0 | 64° – 71° |
| November | 71° | 39° | 0.5" | 0 | 3 | 0 | 48° – 63° |
| December | 61° | 31° | 0.9" | 0 | 5 | 0 | 43° – 50° |
| Year | 82° | 50° | 9.9" | 0.2" | 49 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Fort Thomas
Fort Thomas gets 10 inches of rain and melted snow a year. August is the wettest month and June the driest. Rain or snow falls on about 49 days a year.
About 217 frost-free days a year
In half of years the last 32° night comes by April 1 and the first one by November 6. That leaves about 217 frost-free days for gardens, longer than 81% of U.S. towns.
Heating and cooling a home in Fort Thomas
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Fort Thomas, 52% of that work is heating and 48% is cooling.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Fort Thomas compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Fort Thomas averaged 1.5° warmer than the 1900s. The biggest change is in March (+2.4°). The shift is larger than in 68% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Fort Thomas’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. November swings the most: between 1991 and 2020 its average temperature ranged from 48° to 63°. July is the most reliable, staying within 6°.
Common questions about Fort Thomas’s climate
What is the coldest month in Fort Thomas?
January, with a typical high of 62° and a low of 31°.
What is the hottest month in Fort Thomas?
June, with a typical high of 100° and a low of 65°. About 136 days a year reach 90°.
How much snow does Fort Thomas get?
Almost none. A normal year brings 0.2 inches.
When is the first frost in Fort Thomas?
In half of years the first 32° night comes by November 6, and the last spring frost by April 1.
What is the rainiest month in Fort Thomas?
August, with 2.0 inches of rain and melted snow. The year totals 10 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Fort Thomas itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Safford Ag Ctr, AZ (22 mi, snow) and Ft Thomas 2 Sw, AZ (2 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.