| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ☀️ Average high (°F) | 27.1 | 31.5 | 45.3 | 59.8 | 71.6 | 81.1 | 83.9 | 81.7 | 75.7 | 61.8 | 46.0 | 32.6 | 58.3 |
| 🌙 Average low (°F) | 9.4 | 13.9 | 25.7 | 36.6 | 48.9 | 59.5 | 62.7 | 59.7 | 51.1 | 38.9 | 26.4 | 15.8 | 37.5 |
| ☀️ Record high (°F) | 65 | 71 | 87 | 100 | 108 | 107 | 112 | 110 | 102 | 95 | 83 | 74 | 112 |
| 🌙 Record low (°F) | -34 | -31 | -34 | -4 | 22 | 33 | 42 | 33 | 19 | 0 | -17 | -29 | -34 |
| 💧 Average precipitation (inches) | 1.1 | 1.1 | 2.0 | 4.0 | 4.6 | 5.7 | 4.3 | 4.2 | 3.1 | 2.8 | 1.9 | 1.4 | 36.3 |
| ❄️ Average snow (inches) | 10.1 | 9.3 | 4.6 | 1.7 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 3.1 | 9.9 | 39.1 |
|
More Waterloo Weather Records
1895–2022
|
||
|---|---|---|
| Highest daily low | 80 °F | August 16, 1988 |
| Lowest daily high | -16 °F | February 2, 1996 |
| Greatest daily range (Difference of high and low) |
59 °F | January 18, 1996 |
| Difference in high temperature over two conscutive days |
52 °F | Jan 18–19, 1996 |
| Most daily precipitation | 5.5 inches | July 2, 1999 |
| Most monthly precipitation | 13.3 inches | September 2018 |
| Most yearly precipitation | 54.2 inches | 2018 |
| Earliest freeze | September 13 | 1975 |
| Latest freeze | May 29 | 1965 |
| Earliest snow in season | October 14 | 2018 |
| Latest snow in season | May 29 | 1947 |
| Most daily snow | 13.2 inches | January 3, 1971 |
| Most monthly snow | 33.8 inches | December 2000 |
| Most yearly snow | 64.9 inches | 2019 |
| Most days in a year ≥ 80 °F | 113 | 1922 |
| Most days in a year ≥ 90 °F | 60 | 1936 |
| Most days in a year ≥ 100 °F | 20 | 1936 |
|
Waterloo Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 10 days | May 16–25, 1902 |
| Without precipitation | 56 days | Sep 22 – Nov 16, 1952 |
| With snow | 7 days | Feb 5–11, 2018 |
| Freezing temperatures High temperature ≤ 32 °F
|
52 days | Dec 30, 1978 – Feb 19, 1979 |
| High temperature ≥ 80 °F | 67 days | Jun 23 – Aug 28, 1936 |
| High temperature ≥ 90 °F | 21 days | Jun 28 – Jul 18, 1921 |
| High temperature ≥ 100 °F | 13 days | Jul 5–17, 1936 |