Fort Thomas climate — normals and trends
Fort Thomas (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.6 °C and it receives 1,066 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (24.5 °C on average) and the coldest is January (-0.5 °C). Rainfall peaks in May.
Fort Thomas averages 85 frost days, 44 hot days (≥ 30 °C) and 127 rainy days per year.
Fort Thomas has warmed by +1.6 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 97 to 73 per year over the period.
The hottest day of the period reached 40.6 °C (on 14 July 1954) and the coldest -29.1 °C (on 17 January 1977).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Fort ThomasKentucky
- coords
- 39.08°, -84.45°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.6°C
Average daily high
17.6°C
Average daily low
8.0°C
Annual rainfall
1,066mm
Sunshine / day
8.7h
Mean relative humidity
70%
Average peak wind
15.2km/h
Seasonal range
25.0°C
Frost days (< 0 °C)
85 d/yr
Hot days (≥ 30 °C)
44 d/yr
Rainy days (≥ 1 mm)
127 d/yr
Annual snowfall
42.9 cm
Average feels-like high
16.5 °C
Average feels-like low
6.0 °C
Average peak gust
36.0 km/h
Tropical nights (≥ 20 °C)
46 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.33 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
40.6 °C
14 July 1954
Coldest day
-29.1 °C
17 January 1977
Wettest day
128 mm
1 October 1977
Windiest day
44.6 km/h
14 September 2008
Strongest gust
108.7 km/h
27 September 2024
Hottest feels-like
44.0 °C
29 June 2012
Coldest feels-like
-35.3 °C
20 January 1985
Snowiest day
29.6 cm
22 March 1968
Sunniest day
14.7 h
11 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 1.2 °C | -2.5 °C | 69 mm | -13 mm |
| Feb | 7.0 °C | +1.0 °C | 136 mm | +53 mm |
| Mar | 16.3 °C | +4.7 °C | 131 mm | +23 mm |
| Apr | 19.6 °C | +1.6 °C | 157 mm | +49 mm |
| May | 21.6 °C | -1.5 °C | 143 mm | +33 mm |
| Jun | 29.0 °C | +1.2 °C | 128 mm | +33 mm |
| Jul | 30.8 °C | +1.2 °C | 168 mm | +75 mm |
| Aug | 28.3 °C | -0.8 °C | 42 mm | -32 mm |
| Sep | 27.9 °C | +2.3 °C | 59 mm | -11 mm |
| Oct | 20.2 °C | +1.0 °C | 91 mm | +20 mm |
| Nov | 11.7 °C | 0.0 °C | 63 mm | -24 mm |
| Dec | 6.2 °C | +0.3 °C | 64 mm | -22 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Fort Thomas?
Fort Thomas has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.6 °C and it receives 1,066 mm of precipitation per year.
What is the hottest day ever recorded in Fort Thomas?
The hottest day measured in Fort Thomas between 1940 and 2025 was 14 July 1954, reaching 40.6 °C.
What is the coldest day in Fort Thomas?
The coldest day measured in Fort Thomas between 1940 and 2025 was 17 January 1977, at -29.1 °C.
Does it snow in Fort Thomas?
Yes. Fort Thomas gets on average 42.9 cm of snow per year and has around 85 frost days.
Has the climate of Fort Thomas warmed?
Yes: Fort Thomas warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Fort Thomas?
The wettest day measured in Fort Thomas between 1940 and 2025 was 1 October 1977, with 128 mm of rain in 24 hours.
What was the windiest day in Fort Thomas?
The windiest day measured in Fort Thomas between 1940 and 2025 was 14 September 2008, with winds reaching 44.6 km/h.
What is the warmest month in Fort Thomas?
The warmest month in Fort Thomas is July (24.5 °C on average); the coldest is January (-0.5 °C).
How much does it rain in Fort Thomas?
Fort Thomas receives on average 1,066 mm of precipitation per year, spread over about 127 rainy days.
Is it sunny in Fort Thomas?
Fort Thomas gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Fort Thomas?
The heaviest 24-hour snowfall measured in Fort Thomas between 1940 and 2025 was 22 March 1968, with 29.6 cm.
Are there tropical nights in Fort Thomas?
Yes: Fort Thomas has on average 46 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Fort Thomas?
In Fort Thomas, between 1940 and 2025, the highest apparent temperature reached 44.0 °C on 29 June 2012, and the lowest was -35.3 °C on 20 January 1985.
Compare Fort Thomas with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Fort Thomas