Ontario Weather in July
Average highs run from 80°F on July 1 to 81°F on July 31, and lows from 60°F to 62°F. Normal precipitation for the month is 2.89 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
- 61°F
- Precipitation
- 2.89 in
- Record high
- 100°FJul 10, 2020
- Record low
- 42°FJul 2, 1969
- Chance of a freeze
- 0%
- Days of 90°F or more
- 3.4
- Daylight
- 15 h 20 min to 14 h 34 min
- Cloud cover
- 72%
- Humidity
- 70%
- Dew point
- 60°F
- Wind
- 4.5 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 | 60°F | 93°F 1946 | 47°F 1943 | 37% | 0% |
| Jul 2 | 80°F | 60°F | 98°F 1947 | 42°F 1969 | 37% | 0% |
| Jul 3 | 80°F | 60°F | 96°F 1966 | 42°F 2005 | 36% | 0% |
| Jul 4 | 80°F | 60°F | 95°F 1983 | 46°F 1962 | 36% | 0% |
| Jul 5 | 81°F | 60°F | 93°F 1983 | 44°F 1961 | 36% | 0% |
| Jul 6 | 81°F | 60°F | 99°F 1993 | 43°F 1960 | 36% | 0% |
| Jul 7 | 81°F | 60°F | 96°F 1982 | 44°F 1963 | 36% | 0% |
| Jul 8 | 81°F | 61°F | 95°F 1938 | 43°F 1969 | 36% | 0% |
| Jul 9 | 81°F | 61°F | 98°F 2007 | 44°F 1963 | 36% | 0% |
| Jul 10 | 81°F | 61°F | 100°F 2020 | 46°F 2022 | 35% | 0% |
| Jul 11 | 81°F | 61°F | 100°F 1966 | 47°F 1945 | 35% | 0% |
| Jul 12 | 81°F | 61°F | 96°F 1943 | 47°F 1971 | 35% | 0% |
| Jul 13 | 81°F | 61°F | 97°F 1942 | 44°F 1926 | 35% | 0% |
| Jul 14 | 81°F | 61°F | 98°F 1995 | 45°F 1926 | 35% | 0% |
| Jul 15 | 81°F | 61°F | 94°F 1952 | 43°F 1930 | 36% | 0% |
| Jul 16 | 81°F | 61°F | 97°F 1988 | 46°F 1926 | 36% | 0% |
| Jul 17 | 81°F | 61°F | 97°F 1982 | 47°F 1973 | 36% | 0% |
| Jul 18 | 81°F | 61°F | 97°F 1953 | 46°F 1973 | 36% | 0% |
| Jul 19 | 82°F | 61°F | 96°F 1946 | 46°F 1956 | 36% | 0% |
| Jul 20 | 82°F | 61°F | 99°F 2011 | 43°F 1965 | 36% | 0% |
| Jul 21 | 82°F | 62°F | 97°F 1994 | 45°F 1929 | 36% | 0% |
| Jul 22 | 82°F | 62°F | 94°F 1955 | 48°F 1974 | 36% | 0% |
| Jul 23 | 82°F | 62°F | 98°F 2001 | 48°F 1997 | 37% | 0% |
| Jul 24 | 82°F | 62°F | 96°F 1941 | 43°F 2002 | 37% | 0% |
| Jul 25 | 82°F | 62°F | 97°F 1941 | 49°F 1955 | 37% | 0% |
| Jul 26 | 82°F | 62°F | 96°F 1938 | 47°F 1923 | 37% | 0% |
| Jul 27 | 82°F | 62°F | 95°F 1939 | 45°F 1962 | 38% | 0% |
| Jul 28 | 81°F | 62°F | 95°F 1964 | 45°F 1977 | 38% | 0% |
| Jul 29 | 81°F | 62°F | 92°F 1990 | 48°F 1965 | 38% | 0% |
| Jul 30 | 81°F | 62°F | 92°F 1947 | 45°F 1965 | 38% | 0% |
| Jul 31 | 81°F | 62°F | 96°F 1999 | 46°F 1928 | 38% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- July 1
- sunrise 5:33 AM, sunset 8:53 PM
- July 31
- sunrise 5:58 AM, sunset 8:32 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00309049 (Webster 2 Ne), public domain. Records: NOAA GHCN-Daily, station USC00307842, 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.