Waterloo Weather in July
Average highs run from 88°F on July 1 to 89°F on July 31, and lows from 66°F to 67°F. Normal precipitation for the month is 3.83 in over about 8 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
- 88°F
- Average low
- 67°F
- Precipitation
- 3.83 in
- Record high
- 107°FJul 6, 2012
- Record low
- 50°FJul 28, 2013
- Chance of a freeze
- 0%
- Days of 90°F or more
- 12.6
- Daylight
- 14 h 47 min to 14 h 09 min
- Cloud cover
- 50%
- Humidity
- 74%
- Dew point
- 68°F
- Wind
- 6.0 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 | 88°F | 66°F | 102°F 2012 | 54°F 2010 | 28% | 0% |
| Jul 2 | 88°F | 66°F | 102°F 2012 | 55°F 2001 | 28% | 0% |
| Jul 3 | 88°F | 66°F | 100°F 2012 | 55°F 2010 | 28% | 0% |
| Jul 4 | 88°F | 67°F | 104°F 2012 | 54°F 2014 | 28% | 0% |
| Jul 5 | 88°F | 67°F | 105°F 2012 | 52°F 1997 | 28% | 0% |
| Jul 6 | 88°F | 67°F | 107°F 2012 | 56°F 2006 | 27% | 0% |
| Jul 7 | 88°F | 67°F | 107°F 2012 | 57°F 2006 | 27% | 0% |
| Jul 8 | 88°F | 67°F | 100°F 2001 | 57°F 2018 | 27% | 0% |
| Jul 9 | 88°F | 67°F | 98°F 2002 | 59°F 2023 | 27% | 0% |
| Jul 10 | 88°F | 67°F | 98°F 2017 | 58°F 2014 | 27% | 0% |
| Jul 11 | 88°F | 67°F | 99°F 2017 | 58°F 1999 | 27% | 0% |
| Jul 12 | 88°F | 67°F | 100°F 2017 | 56°F 1999 | 27% | 0% |
| Jul 13 | 89°F | 67°F | 98°F 2017 | 57°F 1999 | 26% | 0% |
| Jul 14 | 89°F | 67°F | 98°F 2015 | 59°F 1999 | 26% | 0% |
| Jul 15 | 89°F | 67°F | 97°F 2024 | 54°F 2001 | 26% | 0% |
| Jul 16 | 89°F | 68°F | 100°F 2022 | 53°F 2014 | 26% | 0% |
| Jul 17 | 89°F | 68°F | 100°F 2012 | 55°F 2014 | 26% | 0% |
| Jul 18 | 89°F | 68°F | 103°F 2012 | 60°F 2014 | 26% | 0% |
| Jul 19 | 89°F | 68°F | 101°F 2012 | 56°F 2014 | 26% | 0% |
| Jul 20 | 89°F | 68°F | 101°F 2017 | 56°F 2009 | 26% | 0% |
| Jul 21 | 89°F | 68°F | 102°F 1998 | 57°F 2007 | 26% | 0% |
| Jul 22 | 89°F | 68°F | 103°F 2017 | 55°F 2000 | 26% | 0% |
| Jul 23 | 89°F | 68°F | 104°F 2012 | 56°F 2000 | 26% | 0% |
| Jul 24 | 89°F | 68°F | 104°F 2012 | 55°F 2000 | 26% | 0% |
| Jul 25 | 89°F | 68°F | 105°F 2012 | 55°F 2000 | 26% | 0% |
| Jul 26 | 89°F | 68°F | 103°F 1999 | 58°F 2000 | 25% | 0% |
| Jul 27 | 89°F | 68°F | 100°F 2023 | 53°F 2004 | 25% | 0% |
| Jul 28 | 89°F | 67°F | 99°F 2011 | 50°F 2013 | 25% | 0% |
| Jul 29 | 89°F | 67°F | 104°F 1999 | 51°F 2014 | 25% | 0% |
| Jul 30 | 89°F | 67°F | 102°F 1999 | 56°F 2014 | 25% | 0% |
| Jul 31 | 89°F | 67°F | 101°F 2012 | 57°F 1997 | 25% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- July 1
- sunrise 5:41 AM, sunset 8:28 PM
- July 31
- sunrise 6:02 AM, sunset 8:11 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00232850 (Festus), public domain. Records: NOAA GHCN-Daily, station USW00003960, 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.