Rockville Weather in July
Average highs run from 80°F on July 1 to 80°F on July 31, and lows from 62°F to 63°F. Normal precipitation for the month is 4.01 in over about 11 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
- 81°F
- Average low
- 63°F
- Precipitation
- 4.01 in
- Record high
- 103°FJul 22, 2011
- Record low
- 44°FJul 2, 1962
- Chance of a freeze
- 0%
- Days of 90°F or more
- 1.5
- Daylight
- 15 h 10 min to 14 h 26 min
- Cloud cover
- 60%
- Humidity
- 73%
- Dew point
- 62°F
- Wind
- 3.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jul 1 | 80°F | 62°F | 101°F 1964 | 46°F 1988 | 35% | 0% |
| Jul 2 | 80°F | 62°F | 100°F 2026 | 44°F 1962 | 35% | 0% |
| Jul 3 | 80°F | 62°F | 102°F 1966 | 45°F 2001 | 35% | 0% |
| Jul 4 | 80°F | 62°F | 101°F 1949 | 49°F 1962 | 35% | 0% |
| Jul 5 | 80°F | 62°F | 99°F 1999 | 46°F 1979 | 34% | 0% |
| Jul 6 | 80°F | 63°F | 102°F 2010 | 48°F 1962 | 34% | 0% |
| Jul 7 | 80°F | 63°F | 100°F 2010 | 46°F 1979 | 34% | 0% |
| Jul 8 | 80°F | 63°F | 97°F 1981 | 49°F 1969 | 34% | 0% |
| Jul 9 | 81°F | 63°F | 96°F 1971 | 46°F 1963 | 34% | 0% |
| Jul 10 | 81°F | 63°F | 99°F 1988 | 49°F 1963 | 34% | 0% |
| Jul 11 | 81°F | 63°F | 95°F 1988 | 51°F 2002 | 34% | 0% |
| Jul 12 | 81°F | 63°F | 97°F 1966 | 48°F 1978 | 34% | 0% |
| Jul 13 | 81°F | 63°F | 99°F 1966 | 51°F 1971 | 34% | 0% |
| Jul 14 | 81°F | 63°F | 100°F 1965 | 51°F 2009 | 34% | 0% |
| Jul 15 | 81°F | 63°F | 100°F 1995 | 49°F 1950 | 33% | 0% |
| Jul 16 | 81°F | 63°F | 96°F 1968 | 51°F 1987 | 33% | 0% |
| Jul 17 | 81°F | 63°F | 97°F 1999 | 50°F 1954 | 33% | 0% |
| Jul 18 | 81°F | 63°F | 100°F 2012 | 50°F 1956 | 33% | 0% |
| Jul 19 | 81°F | 63°F | 100°F 1991 | 51°F 1956 | 33% | 0% |
| Jul 20 | 81°F | 63°F | 100°F 1991 | 51°F 1965 | 33% | 0% |
| Jul 21 | 81°F | 63°F | 101°F 1977 | 50°F 1951 | 33% | 0% |
| Jul 22 | 81°F | 63°F | 103°F 2011 | 52°F 1974 | 33% | 0% |
| Jul 23 | 81°F | 63°F | 99°F 1978 | 49°F 1977 | 33% | 0% |
| Jul 24 | 81°F | 63°F | 96°F 1987 | 49°F 1985 | 33% | 0% |
| Jul 25 | 81°F | 63°F | 98°F 2001 | 51°F 1960 | 33% | 0% |
| Jul 26 | 81°F | 63°F | 95°F 1989 | 50°F 1976 | 33% | 0% |
| Jul 27 | 81°F | 63°F | 98°F 2020 | 49°F 1977 | 33% | 0% |
| Jul 28 | 81°F | 63°F | 96°F 1949 | 48°F 2001 | 33% | 0% |
| Jul 29 | 81°F | 63°F | 96°F 1949 | 51°F 1977 | 33% | 0% |
| Jul 30 | 80°F | 63°F | 98°F 1949 | 48°F 1968 | 33% | 0% |
| Jul 31 | 80°F | 63°F | 95°F 1975 | 50°F 1956 | 33% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- July 1
- sunrise 5:19 AM, sunset 8:29 PM
- July 31
- sunrise 5:43 AM, sunset 8:09 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00068138 (Storrs), public domain. Records: NOAA GHCN-Daily, station USW00014740, 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.