Key Largo, FL weather in January
Expect mild, often humid weather with some rain in Key Largo in January, with highs near 78°F and lows near 55°F. Rain falls on about 7 days. It is one of the coolest months in Key Largo.
- Normal high
- 78°F
- Normal low
- 55°F
- Wet days
- 7
- 1.7 in total
- Muggy days
- 11
- dew point 65°F+
How January changes from start to finish
| January 1 | January 31 | |
|---|---|---|
| Normal high | 78°F | 79°F |
| Normal low | 56°F | 56°F |
| Chance of a wet day | 21% | 21% |
| Sunrise / sunset | 7:07 am / 5:43 pm | 7:04 am / 6:05 pm |
| Daylight | 10.6 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 am62°Fdew point 58°F
- 9 am67°Fdew point 60°F
- Noon74°Fdew point 60°F
- 3 pm74°Fdew point 60°F
- 6 pm70°Fdew point 60°F
- 9 pm66°Fdew point 60°F
NOAA hourly normals (local standard time) from Homestead AFB (28 mi away); average wind 8 mph; clear or few clouds in 52% of daytime hours, mostly cloudy or overcast in 31%.
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 mph15 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more11 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 1.7 in; a dry January brings about 0.4 in and a wet one about 2.6 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How January varies from year to year
- Warmest January, 1991-20202007: average high 83°F
- Coolest January2003: average high 73°F
- Wettest January2016: 4.7 in
- Driest January2012: 0.04 in
- Highest reading92°F (January 18, 2008)
- Lowest reading25°F (January 19, 1997)
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 | 80°F | 78°F | 81°F |
| Normal low | 59°F | 55°F | 57°F |
| Wet days | 7 | 7 | 6 |
| Comfortable days | 6 | 9 | 7 |
| Daylight | 10.6 h | 10.8 h | 11.3 h |
Highs change by -2°F from December and +3°F into February.
Nearby alternatives in January
- Cooler: Port St. Lucie, FL153 mi · high 72°F · 8 wet days
How Key Largo ranks in January
- Normal high8th warmest of 378 cities; 1st of 23 in Florida
- Wet days85th driest of 378
- Comfortable days85th most of 339
What to pack for Key Largo in January
- A swimsuit – about 15 beach days
Heating and cooling
January has 64 heating degree days and 112 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Key Largo in January?
The normal high is 78°F and the normal low is 55°F. From 1991 to 2020 the hottest January reading was 92°F (most recently on January 18, 2008).
Does it rain a lot in Key Largo in January?
About 7 days in January have at least 0.01 in of precipitation, and the normal total is 1.7 in. The wettest January in 1991-2020 was in 2016 (4.7 in); the driest was in 2012 (0.04 in).
Is January a good time to visit Key Largo?
January ranks 1st of 12 months on our comfort score for Key Largo (58 out of 100). It has about 9 comfortable days and about 1 day at 90°F or hotter. The best months are January, February and March.
Where the numbers come from
- Temperature, rain and snow depth: Royal Palm RS (USC00087760), 23 mi NNW of the city center, 7 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and frost dates: Tavernier (USC00088841), 7.2 mi SW of the city center, 7 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Homestead AFB (USW00012826), 28 mi N of the city center, 16 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Homestead AFB Airport (722026-12826), 28 mi N of the city center, 5 ft . Hourly observations, 1991-2020.