Key West, FL weather in July
In July, Key West sees highs around 90°F and lows around 81°F: hot and oppressively humid, with frequent rain. Rain falls on about 12 days. It is one of the warmest months in Key West.
- Normal high
- 90°F
- Normal low
- 81°F
- Wet days
- 12
- 3.6 in total
- Muggy days
- 31
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 90°F | 91°F |
| Normal low | 80°F | 81°F |
| Chance of a wet day | 38% | 41% |
| Sunrise / sunset | 6:42 am / 8:20 pm | 6:55 am / 8:11 pm |
| Daylight | 13.6 h | 13.3 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 July day
- 6 am82°Fdew point 75°F
- 9 am86°Fdew point 75°F
- Noon88°Fdew point 75°F
- 3 pm88°Fdew point 75°F
- 6 pm86°Fdew point 75°F
- 9 pm84°Fdew point 75°F
NOAA hourly normals (local standard time) from Key West Intl Airport (2 mi away); average wind 9 mph; clear or few clouds in 68% of daytime hours, mostly cloudy or overcast in 18%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph22 of 31
- Hot dayshigh 90°F or more18 of 31
- Muggy daysdaily mean dew point 65°F or more31 of 31
- Wet daysat least 0.01 in of rain or melted snow12 of 31
- Notable rainat least 0.10 in7 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 3.6 in; a dry July brings about 1.9 in and a wet one about 5.7 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How July varies from year to year
- Warmest July, 1991-20202018: average high 92°F
- Coolest July2012: average high 87°F
- Wettest July2012: 8.5 in
- Driest July1993: 0.4 in
- Highest reading94°F (July 15, 2020)
- Lowest reading72°F (July 17, 2013)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 89°F | 90°F | 91°F |
| Normal low | 79°F | 81°F | 81°F |
| Wet days | 11 | 12 | 15 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 13.6 h | 13.5 h | 13.0 h |
Highs change by +1°F from June and +1°F into August.
How Key West ranks in July
- Normal high142nd warmest of 378 cities; 20th of 23 in Florida
- Wet days298th driest of 378
- Comfortable days268th most of 340
What to pack for Key West in July
- Light, breathable clothing – highs near 90°F and about 31 muggy days
- A rain jacket or umbrella – rain on about 12 days
- A swimsuit – about 22 beach days
Heating and cooling
July has 0 heating degree days and 632 cooling degree days (base 65°F), 12% of the year's total heating and cooling demand.
Questions
How hot is Key West in July?
The normal high is 90°F and the normal low is 81°F. From 1991 to 2020 the hottest July reading was 94°F (most recently on July 15, 2020).
Does it rain a lot in Key West in July?
About 12 days in July have at least 0.01 in of precipitation, and the normal total is 3.6 in. The wettest July in 1991-2020 was in 2012 (8.5 in); the driest was in 1993 (0.4 in).
Is July a good time to visit Key West?
July ranks 10th of 12 months on our comfort score for Key West (39 out of 100). It has almost no comfortable days and about 18 days at 90°F or hotter. 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).