Key West, FL weather in January
Expect mild, often humid weather with some rain in Key West in January, with highs near 76°F and lows near 66°F. Rain falls on about 7 days. It is one of the coolest months in Key West.
- Normal high
- 76°F
- Normal low
- 66°F
- Wet days
- 7
- 1.8 in total
- Muggy days
- 14
- dew point 65°F+
How January changes from start to finish
| January 1 | January 31 | |
|---|---|---|
| Normal high | 76°F | 76°F |
| Normal low | 66°F | 66°F |
| Chance of a wet day | 22% | 19% |
| Sunrise / sunset | 7:11 am / 5:50 pm | 7:09 am / 6:11 pm |
| Daylight | 10.7 h | 11.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical January day
- 6 am67°Fdew point 62°F
- 9 am70°Fdew point 62°F
- Noon73°Fdew point 62°F
- 3 pm73°Fdew point 62°F
- 6 pm71°Fdew point 62°F
- 9 pm69°Fdew point 62°F
NOAA hourly normals (local standard time) from Key West Intl Airport (2 mi away); average wind 11 mph; clear or few clouds in 62% of daytime hours, mostly cloudy or overcast in 27%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F9 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph6 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more14 of 31
- Wet daysat least 0.01 in of rain or melted snow7 of 31
- Notable rainat least 0.10 in3 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per January, counted from daily records for each year 1991-2020.
Rain in January
Normal precipitation is 1.8 in; a dry January brings about 0.6 in and a wet one about 2.4 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How January varies from year to year
- Warmest January, 1991-20201991: average high 80°F
- Coolest January2010: average high 69°F
- Wettest January1993: 8.0 in
- Driest January2002: 0.09 in
- Highest reading86°F (January 29, 1991)
- Lowest reading42°F (January 11, 2010)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
January compared with December and February
| December | January | February | |
|---|---|---|---|
| Normal high | 78°F | 76°F | 77°F |
| Normal low | 68°F | 66°F | 67°F |
| Wet days | 6 | 7 | 5 |
| Comfortable days | 7 | 9 | 7 |
| Daylight | 10.6 h | 10.8 h | 11.3 h |
Highs change by -2°F from December and +1°F into February.
How Key West ranks in January
- Normal high10th warmest of 378 cities; 3rd of 23 in Florida
- Wet days94th driest of 378
- Comfortable days87th most of 339
Heating and cooling
January has 22 heating degree days and 197 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Key West in January?
The normal high is 76°F and the normal low is 66°F. From 1991 to 2020 the hottest January reading was 86°F (January 29, 1991).
Does it rain a lot in Key West in January?
About 7 days in January have at least 0.01 in of precipitation, and the normal total is 1.8 in. The wettest January in 1991-2020 was in 1993 (8.0 in); the driest was in 2002 (0.09 in).
Is January a good time to visit Key West?
January ranks 3rd of 12 months on our comfort score for Key West (58 out of 100). It has about 9 comfortable days. The best months are January, February and March.
Where the numbers come from
- Temperature, rain, frost dates, humidity and wind by hour and cloud cover: Key West Intl Airport (USW00012836), 1.9 mi E of the city center, 4 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Key West International Airport (722010-12836), 1.7 mi E of the city center, 1 ft . Hourly observations, 1991-2020.
- Not available for this location: snowfall and snow depth (no station close enough or similar enough in elevation).