Key Biscayne Weather in July
Average highs run from 91°F on July 1 to 91°F on July 31, and lows from 79°F to 79°F. Normal precipitation for the month is 5.64 in over about 15 wet days.
July day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 91°F
- Average low
- 79°F
- Precipitation
- 5.64 in
- Record high
- 98°FJul 2, 2019
- Record low
- 69°FJul 4, 1985
- Chance of a freeze
- 0%
- Days of 90°F or more
- 14.2
- Daylight
- 13 h 43 min to 13 h 20 min
- Cloud cover
- 57%
- Humidity
- 76%
- Dew point
- 75°F
- Wind
- 8.7 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Jul 1 | 91°F | 79°F | 97°F 1995 | 71°F 1975 | 50% |
| Jul 2 | 91°F | 79°F | 98°F 2019 | 71°F 1990 | 50% |
| Jul 3 | 91°F | 79°F | 98°F 1998 | 72°F 1952 | 50% |
| Jul 4 | 91°F | 79°F | 96°F 1992 | 69°F 1985 | 50% |
| Jul 5 | 91°F | 79°F | 97°F 1992 | 72°F 1952 | 50% |
| Jul 6 | 91°F | 79°F | 95°F 1992 | 71°F 1950 | 50% |
| Jul 7 | 91°F | 79°F | 97°F 2023 | 72°F 1950 | 49% |
| Jul 8 | 91°F | 79°F | 96°F 2023 | 73°F 1948 | 49% |
| Jul 9 | 91°F | 79°F | 98°F 2020 | 71°F 1950 | 49% |
| Jul 10 | 91°F | 79°F | 97°F 2020 | 69°F 1950 | 49% |
| Jul 11 | 91°F | 79°F | 96°F 2023 | 71°F 1956 | 49% |
| Jul 12 | 91°F | 79°F | 97°F 2023 | 71°F 1955 | 50% |
| Jul 13 | 91°F | 79°F | 96°F 1987 | 71°F 1957 | 50% |
| Jul 14 | 91°F | 79°F | 97°F 2020 | 71°F 1957 | 50% |
| Jul 15 | 91°F | 79°F | 96°F 1981 | 71°F 1950 | 50% |
| Jul 16 | 91°F | 79°F | 97°F 1981 | 72°F 1985 | 50% |
| Jul 17 | 91°F | 79°F | 97°F 2011 | 71°F 1980 | 50% |
| Jul 18 | 91°F | 79°F | 95°F 1981 | 72°F 1949 | 50% |
| Jul 19 | 91°F | 79°F | 98°F 1981 | 71°F 1985 | 50% |
| Jul 20 | 91°F | 79°F | 95°F 1981 | 69°F 1985 | 50% |
| Jul 21 | 91°F | 79°F | 96°F 1995 | 71°F 1950 | 49% |
| Jul 22 | 91°F | 79°F | 97°F 2023 | 71°F 1950 | 49% |
| Jul 23 | 91°F | 79°F | 98°F 2023 | 70°F 1953 | 49% |
| Jul 24 | 91°F | 79°F | 98°F 1983 | 71°F 2001 | 49% |
| Jul 25 | 91°F | 79°F | 95°F 1983 | 71°F 1951 | 49% |
| Jul 26 | 91°F | 79°F | 97°F 1983 | 71°F 1948 | 49% |
| Jul 27 | 91°F | 79°F | 95°F 1990 | 72°F 1959 | 49% |
| Jul 28 | 91°F | 79°F | 96°F 1990 | 71°F 1983 | 48% |
| Jul 29 | 91°F | 79°F | 97°F 1990 | 72°F 1955 | 48% |
| Jul 30 | 91°F | 79°F | 96°F 2026 | 72°F 1969 | 48% |
| Jul 31 | 91°F | 79°F | 96°F 2026 | 73°F 1951 | 48% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- July 1
- sunrise 6:33 AM, sunset 8:16 PM
- July 31
- sunrise 6:47 AM, sunset 8:07 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00081306 (Cape Florida), public domain. Records: NOAA GHCN-Daily, station USW00012839, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.