St. Johns Weather in August
Average highs run from 92°F on August 1 to 90°F on August 31, and lows from 77°F to 76°F. Normal precipitation for the month is 6.28 in over about 15 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 91°F
- Average low
- 76°F
- Precipitation
- 6.28 in
- Record high
- 103°FAug 6, 2007
- Record low
- 60°FAug 23, 1979
- Chance of a freeze
- 0%
- Days of 90°F or more
- 22.8
- Daylight
- 13 h 35 min to 12 h 47 min
- Cloud cover
- 59%
- Humidity
- 83%
- Dew point
- 75°F
- Wind
- 6.7 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 |
|---|---|---|---|---|---|
| Aug 1 | 92°F | 77°F | 98°F 1953 | 69°F 1952 | 51% |
| Aug 2 | 92°F | 77°F | 98°F 1951 | 69°F 1968 | 51% |
| Aug 3 | 92°F | 77°F | 99°F 1970 | 68°F 1975 | 51% |
| Aug 4 | 92°F | 77°F | 100°F 2011 | 70°F 1968 | 51% |
| Aug 5 | 92°F | 77°F | 99°F 1954 | 68°F 1981 | 51% |
| Aug 6 | 92°F | 77°F | 103°F 2007 | 69°F 1972 | 51% |
| Aug 7 | 92°F | 77°F | 103°F 2007 | 68°F 1950 | 51% |
| Aug 8 | 92°F | 77°F | 102°F 1987 | 70°F 1979 | 51% |
| Aug 9 | 92°F | 77°F | 101°F 1987 | 69°F 1965 | 51% |
| Aug 10 | 92°F | 77°F | 102°F 1987 | 69°F 1971 | 51% |
| Aug 11 | 92°F | 77°F | 102°F 2023 | 68°F 1972 | 51% |
| Aug 12 | 91°F | 77°F | 99°F 1954 | 65°F 1989 | 51% |
| Aug 13 | 91°F | 77°F | 100°F 1995 | 69°F 1967 | 51% |
| Aug 14 | 91°F | 77°F | 103°F 1995 | 70°F 1967 | 51% |
| Aug 15 | 91°F | 76°F | 100°F 1995 | 68°F 1989 | 50% |
| Aug 16 | 91°F | 76°F | 99°F 1995 | 67°F 1981 | 50% |
| Aug 17 | 91°F | 76°F | 102°F 1995 | 69°F 1974 | 50% |
| Aug 18 | 91°F | 76°F | 101°F 1995 | 68°F 1983 | 50% |
| Aug 19 | 91°F | 76°F | 99°F 1954 | 68°F 1981 | 50% |
| Aug 20 | 91°F | 76°F | 99°F 1983 | 68°F 1972 | 49% |
| Aug 21 | 91°F | 76°F | 101°F 2014 | 66°F 1976 | 49% |
| Aug 22 | 91°F | 76°F | 102°F 2014 | 67°F 1973 | 49% |
| Aug 23 | 91°F | 76°F | 101°F 2014 | 60°F 1979 | 49% |
| Aug 24 | 91°F | 76°F | 98°F 1986 | 68°F 1957 | 48% |
| Aug 25 | 91°F | 76°F | 98°F 2015 | 66°F 1957 | 48% |
| Aug 26 | 91°F | 76°F | 98°F 1998 | 68°F 1981 | 48% |
| Aug 27 | 90°F | 76°F | 101°F 2011 | 64°F 1969 | 48% |
| Aug 28 | 90°F | 76°F | 99°F 1954 | 66°F 1984 | 48% |
| Aug 29 | 90°F | 76°F | 97°F 1951 | 65°F 1984 | 47% |
| Aug 30 | 90°F | 76°F | 99°F 1990 | 69°F 1984 | 47% |
| Aug 31 | 90°F | 76°F | 98°F 1954 | 69°F 1967 | 47% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- August 1
- sunrise 6:45 AM, sunset 8:20 PM
- August 31
- sunrise 7:03 AM, sunset 7:50 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093837 (Jacksonville Nas), public domain. Records: NOAA GHCN-Daily, station USW00093837, 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.