Waterloo Weather in July
Average highs run from 81°F on July 1 to 83°F on July 31, and lows from 60°F to 61°F. Normal precipitation for the month is 4.44 in over about 10 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
- 82°F
- Average low
- 61°F
- Precipitation
- 4.44 in
- Record high
- 104°FJul 21, 1901
- Record low
- 41°FJul 1, 1965
- Chance of a freeze
- 0%
- Days of 90°F or more
- 3.7
- Daylight
- 15 h 20 min to 14 h 34 min
- Cloud cover
- 52%
- Humidity
- 75%
- Dew point
- 63°F
- Wind
- 8.5 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 | 81°F | 60°F | 101°F 1931 | 41°F 1965 | 37% | 0% |
| Jul 2 | 81°F | 60°F | 98°F 1911 | 44°F 1895 | 37% | 0% |
| Jul 3 | 82°F | 60°F | 98°F 1911 | 43°F 1907 | 36% | 0% |
| Jul 4 | 82°F | 60°F | 99°F 1911 | 46°F 1909 | 36% | 0% |
| Jul 5 | 82°F | 60°F | 101°F 2012 | 43°F 1979 | 36% | 0% |
| Jul 6 | 82°F | 60°F | 102°F 2012 | 41°F 1965 | 35% | 0% |
| Jul 7 | 82°F | 60°F | 102°F 2012 | 44°F 1894 | 35% | 0% |
| Jul 8 | 82°F | 60°F | 97°F 1937 | 45°F 1901 | 35% | 0% |
| Jul 9 | 82°F | 60°F | 96°F 1974 | 42°F 1895 | 34% | 0% |
| Jul 10 | 82°F | 60°F | 101°F 1901 | 44°F 1968 | 34% | 0% |
| Jul 11 | 82°F | 61°F | 97°F 1911 | 44°F 1945 | 34% | 0% |
| Jul 12 | 82°F | 61°F | 98°F 1921 | 46°F 1945 | 33% | 0% |
| Jul 13 | 82°F | 61°F | 97°F 1974 | 46°F 1940 | 33% | 0% |
| Jul 14 | 82°F | 61°F | 101°F 1995 | 45°F 1950 | 33% | 0% |
| Jul 15 | 83°F | 61°F | 99°F 1995 | 45°F 1967 | 32% | 0% |
| Jul 16 | 83°F | 61°F | 101°F 1988 | 44°F 1945 | 32% | 0% |
| Jul 17 | 83°F | 61°F | 98°F 1894 | 44°F 1896 | 32% | 0% |
| Jul 18 | 83°F | 61°F | 100°F 2012 | 48°F 1893 | 32% | 0% |
| Jul 19 | 83°F | 61°F | 97°F 1894 | 45°F 1909 | 32% | 0% |
| Jul 20 | 83°F | 61°F | 102°F 1901 | 46°F 1893 | 31% | 0% |
| Jul 21 | 83°F | 61°F | 104°F 1901 | 43°F 1894 | 31% | 0% |
| Jul 22 | 83°F | 61°F | 98°F 1965 | 44°F 1894 | 31% | 0% |
| Jul 23 | 83°F | 61°F | 102°F 1934 | 47°F 1947 | 31% | 0% |
| Jul 24 | 83°F | 61°F | 103°F 1901 | 46°F 1904 | 31% | 0% |
| Jul 25 | 83°F | 61°F | 101°F 1940 | 41°F 1992 | 31% | 0% |
| Jul 26 | 83°F | 61°F | 99°F 1939 | 46°F 1962 | 31% | 0% |
| Jul 27 | 83°F | 61°F | 98°F 1916 | 44°F 1937 | 31% | 0% |
| Jul 28 | 83°F | 61°F | 101°F 1941 | 49°F 1972 | 31% | 0% |
| Jul 29 | 83°F | 61°F | 102°F 1941 | 48°F 1971 | 31% | 0% |
| Jul 30 | 83°F | 61°F | 99°F 1916 | 43°F 1895 | 31% | 0% |
| Jul 31 | 83°F | 61°F | 96°F 1939 | 41°F 1918 | 31% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- July 1
- sunrise 5:20 AM, sunset 8:40 PM
- July 31
- sunrise 5:45 AM, sunset 8:19 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00478910 (Waterloo Wwtp), public domain. Records: NOAA GHCN-Daily, station USC00478919, 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.