As of 19:34 CDT

Waterloo, IA weather in May

74°

Waterloo, Saturday, 8 August, 19:34

Clear. Feels like 75°. High 81°, low 60°.

Pressure29.97 inHg

Wind5.5 mph SE

Humidity80%

Visibility6.2 mi

Dew point68°

See detailed hourly forecast

In May, Waterloo, IA averages a high of 69.3° and a low of 51°. About 4.7 inches of precipitation fall over the month (12 wet days). The record high is 92.8° (2018) and the record low 27.5° (2005). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	63°	45.3°	28%	85.3° (2021)	30.2° (1966)
2	63°	44.2°	43%	81.9° (2021)	31.5° (1970)
3	63.5°	44.4°	35%	81° (2012)	27.5° (2005)
4	65.8°	45.7°	35%	81.5° (1980)	30.9° (2005)
5	67.5°	47.7°	40%	83.5° (1962)	35.8° (1968)
6	66.9°	47.7°	32%	81.7° (2016)	30° (1989)
7	66.9°	49.5°	47%	82.4° (2000)	35.8° (1989)
8	67.5°	49.3°	42%	84.4° (1963)	33.8° (1976)
9	67.6°	49.1°	33%	85.6° (2022)	30° (2020)
10	68.7°	49.1°	37%	87.1° (2011)	30.2° (1966)
11	67.3°	50.2°	43%	86.7° (2022)	34.2° (1966)
12	66.9°	48.6°	40%	88.7° (2022)	34.7° (1969)
13	66.9°	48.2°	48%	83.8° (1962)	33.3° (1997)
14	69.1°	49.8°	38%	87.4° (2013)	36.7° (1980)
15	69.3°	50.2°	35%	85.5° (2001)	34.9° (2016)
16	70.7°	50.9°	35%	84.7° (2017)	35.6° (2014)
17	70.5°	52°	32%	86.4° (1996)	36° (2014)
18	70.9°	52.5°	33%	87.1° (1996)	37.4° (2002)
19	71.6°	52.5°	40%	87.3° (1998)	37.4° (2002)
20	70.9°	53.1°	38%	86.5° (1975)	36.7° (2002)
21	70.5°	52.3°	37%	85.5° (1970)	37° (2002)
22	71.8°	53.2°	30%	85.1° (1964)	36° (1963)
23	71.6°	55°	43%	85.6° (1994)	34.9° (1963)
24	71.6°	54.3°	47%	88.2° (2010)	39.4° (2001)
25	70.5°	53.6°	50%	87.4° (1967)	41.4° (1992)
26	71.2°	54.1°	43%	89.4° (2018)	38.7° (1961)
27	72.5°	54.9°	48%	92.8° (2018)	36.5° (1971)
28	73°	55.6°	48%	89.8° (2018)	37.6° (1965)
29	73.6°	56.1°	52%	88.2° (2018)	35.1° (1965)
30	74.8°	56.7°	43%	87.1° (2023)	41.9° (1984)
31	73.9°	56.1°	45%	87.8° (2023)	39.2° (1972)