Monticello Weather in August
Average highs run from 91°F on August 1 to 89°F on August 31, and lows from 71°F to 70°F. Normal precipitation for the month is 7.53 in over about 13 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
- 90°F
- Average low
- 71°F
- Precipitation
- 7.53 in
- Record high
- 104°FAug 26, 1938
- Record low
- 55°FAug 31, 1986
- Chance of a freeze
- 0%
- Days of 90°F or more
- 19.9
- Daylight
- 13 h 36 min to 12 h 47 min
- Cloud cover
- 57%
- Humidity
- 80%
- Dew point
- 73°F
- Wind
- 4.0 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 | 91°F | 71°F | 101°F 1986 | 64°F 1966 | 47% |
| Aug 2 | 91°F | 71°F | 100°F 1986 | 64°F 1936 | 47% |
| Aug 3 | 91°F | 71°F | 100°F 1931 | 65°F 1974 | 47% |
| Aug 4 | 91°F | 71°F | 100°F 1931 | 64°F 1976 | 46% |
| Aug 5 | 91°F | 71°F | 101°F 1935 | 62°F 1950 | 46% |
| Aug 6 | 91°F | 71°F | 101°F 1990 | 64°F 1969 | 46% |
| Aug 7 | 91°F | 71°F | 99°F 1953 | 62°F 1950 | 46% |
| Aug 8 | 91°F | 71°F | 100°F 1951 | 61°F 1950 | 45% |
| Aug 9 | 91°F | 71°F | 100°F 1941 | 60°F 2002 | 45% |
| Aug 10 | 90°F | 71°F | 99°F 2007 | 63°F 1994 | 45% |
| Aug 11 | 90°F | 71°F | 100°F 1955 | 64°F 1976 | 44% |
| Aug 12 | 90°F | 71°F | 101°F 1954 | 63°F 1962 | 44% |
| Aug 13 | 90°F | 71°F | 101°F 1954 | 60°F 1967 | 44% |
| Aug 14 | 90°F | 71°F | 99°F 1943 | 60°F 1967 | 43% |
| Aug 15 | 90°F | 71°F | 101°F 1995 | 59°F 1967 | 43% |
| Aug 16 | 90°F | 71°F | 100°F 1990 | 60°F 1967 | 43% |
| Aug 17 | 90°F | 71°F | 100°F 1943 | 62°F 1967 | 42% |
| Aug 18 | 90°F | 71°F | 100°F 1952 | 61°F 1976 | 42% |
| Aug 19 | 90°F | 71°F | 100°F 1952 | 62°F 1962 | 41% |
| Aug 20 | 90°F | 71°F | 101°F 1983 | 62°F 1960 | 41% |
| Aug 21 | 90°F | 71°F | 99°F 1951 | 62°F 1929 | 40% |
| Aug 22 | 90°F | 71°F | 102°F 1980 | 61°F 1981 | 40% |
| Aug 23 | 90°F | 71°F | 98°F 1938 | 60°F 1931 | 39% |
| Aug 24 | 90°F | 71°F | 100°F 1938 | 59°F 1957 | 39% |
| Aug 25 | 90°F | 71°F | 100°F 1938 | 59°F 1957 | 38% |
| Aug 26 | 90°F | 71°F | 104°F 1938 | 61°F 1952 | 38% |
| Aug 27 | 90°F | 70°F | 101°F 1936 | 61°F 2015 | 37% |
| Aug 28 | 90°F | 70°F | 100°F 1998 | 60°F 1927 | 37% |
| Aug 29 | 89°F | 70°F | 100°F 1990 | 57°F 1927 | 36% |
| Aug 30 | 89°F | 70°F | 99°F 1951 | 56°F 1986 | 36% |
| Aug 31 | 89°F | 70°F | 98°F 1954 | 55°F 1986 | 36% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- August 1
- sunrise 6:54 AM, sunset 8:30 PM
- August 31
- sunrise 7:12 AM, sunset 7:59 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00085879 (Monticello 5 Se), public domain. Records: NOAA GHCN-Daily, station USC00096087, 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.