Ontario Weather in July
Average highs run from 89°F on July 1 to 95°F on July 31, and lows from 58°F to 61°F. Normal precipitation for the month is 0.25 in over about 2 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
- 93°F
- Average low
- 60°F
- Precipitation
- 0.25 in
- Record high
- 112°FJul 12, 2002
- Record low
- 44°FJul 28, 2015
- Chance of a freeze
- 0%
- Days of 90°F or more
- 23.5
- Daylight
- 15 h 26 min to 14 h 38 min
- Cloud cover
- 29%
- Humidity
- 35%
- Dew point
- 45°F
- Wind
- 6.7 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 | 89°F | 58°F | 110°F 2013 | 51°F 2014 | 8% | 0% |
| Jul 2 | 89°F | 58°F | 107°F 2013 | 48°F 2011 | 8% | 0% |
| Jul 3 | 89°F | 58°F | 107°F 2021 | 48°F 2010 | 8% | 0% |
| Jul 4 | 90°F | 58°F | 104°F 2007 | 49°F 1999 | 7% | 0% |
| Jul 5 | 90°F | 59°F | 105°F 2007 | 50°F 2025 | 7% | 0% |
| Jul 6 | 91°F | 59°F | 107°F 2021 | 46°F 1999 | 7% | 0% |
| Jul 7 | 91°F | 59°F | 103°F 2017 | 52°F 2010 | 7% | 0% |
| Jul 8 | 92°F | 59°F | 105°F 2017 | 50°F 1999 | 7% | 0% |
| Jul 9 | 92°F | 59°F | 106°F 2024 | 46°F 2004 | 7% | 0% |
| Jul 10 | 92°F | 60°F | 108°F 2024 | 49°F 1999 | 6% | 0% |
| Jul 11 | 93°F | 60°F | 111°F 2002 | 45°F 1997 | 6% | 0% |
| Jul 12 | 93°F | 60°F | 112°F 2002 | 49°F 2016 | 6% | 0% |
| Jul 13 | 93°F | 60°F | 110°F 2002 | 49°F 1997 | 6% | 0% |
| Jul 14 | 94°F | 60°F | 105°F 2007 | 49°F 2010 | 6% | 0% |
| Jul 15 | 94°F | 61°F | 102°F 2021 | 48°F 2009 | 6% | 0% |
| Jul 16 | 94°F | 61°F | 105°F 2023 | 49°F 1999 | 6% | 0% |
| Jul 17 | 95°F | 61°F | 103°F 1998 | 54°F 2016 | 6% | 0% |
| Jul 18 | 95°F | 61°F | 106°F 2003 | 50°F 1999 | 6% | 0% |
| Jul 19 | 95°F | 61°F | 106°F 2003 | 48°F 2001 | 6% | 0% |
| Jul 20 | 95°F | 61°F | 108°F 2003 | 55°F 2007 | 6% | 0% |
| Jul 21 | 95°F | 61°F | 107°F 2006 | 55°F 2001 | 6% | 0% |
| Jul 22 | 95°F | 61°F | 110°F 2003 | 55°F 1999 | 6% | 0% |
| Jul 23 | 96°F | 61°F | 105°F 2006 | 52°F 2011 | 6% | 0% |
| Jul 24 | 96°F | 61°F | 105°F 2024 | 53°F 2005 | 6% | 0% |
| Jul 25 | 96°F | 61°F | 103°F 2018 | 52°F 1999 | 6% | 0% |
| Jul 26 | 96°F | 61°F | 104°F 2013 | 50°F 1999 | 6% | 0% |
| Jul 27 | 96°F | 61°F | 107°F 2022 | 49°F 2005 | 6% | 0% |
| Jul 28 | 96°F | 61°F | 109°F 2022 | 44°F 2015 | 6% | 0% |
| Jul 29 | 96°F | 61°F | 111°F 2022 | 46°F 2015 | 6% | 0% |
| Jul 30 | 95°F | 61°F | 107°F 2022 | 51°F 2015 | 6% | 0% |
| Jul 31 | 95°F | 61°F | 107°F 2020 | 49°F 2001 | 6% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- July 1
- sunrise 6:09 AM, sunset 9:35 PM
- July 31
- sunrise 6:35 AM, sunset 9:13 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00356294 (Ontario Ksrv), public domain. Records: NOAA GHCN-Daily, station USW00024162, 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.