As of 08:21 CDT

Tiffin, IA weather in May

71°

Tiffin, Sunday, 9 August, 08:21

Overcast. Feels like 72°. High 95°, low 67°.

Pressure29.94 inHg

Wind6.7 mph S

Humidity93%

Visibility6.2 mi

Dew point69°

See detailed hourly forecast

In May, Tiffin, IA averages a high of 70.3° and a low of 52.2°. About 4.6 inches of precipitation fall over the month (12 wet days). The record high is 93° (2018) and the record low 28.2° (2005). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	64°	46.8°	32%	82° (2021)	31.6° (1994)
2	64.4°	46°	32%	83.5° (1968)	33.3° (1966)
3	64°	45.5°	25%	80.2° (1969)	28.2° (2005)
4	66.2°	46.9°	33%	80.8° (1982)	31.3° (2005)
5	68.4°	48.6°	47%	85.1° (1962)	37.6° (1968)
6	67.8°	48.9°	37%	84.6° (2004)	32.2° (1989)
7	68.2°	50.5°	55%	84° (2023)	35.4° (1989)
8	68.5°	50.7°	45%	84.2° (1963)	37.2° (1976)
9	68.7°	50.2°	35%	86° (2022)	30.6° (2020)
10	70°	50.2°	35%	88° (2011)	28.9° (1966)
11	68.9°	52°	45%	87.1° (2022)	35.8° (1990)
12	68°	50.2°	37%	89.2° (2022)	35.2° (2021)
13	68.2°	49.6°	50%	84.2° (1962)	36° (2013)
14	69.4°	50.7°	45%	86° (2007)	37.8° (1980)
15	69.8°	51.8°	40%	89.8° (2025)	36.9° (1973)
16	71.4°	51.8°	33%	85.8° (2017)	34.9° (1997)
17	71.6°	52.9°	37%	86.7° (1996)	37.4° (2014)
18	71.8°	53.4°	37%	87.4° (1962)	40.5° (2002)
19	72.5°	53.6°	38%	87.4° (1962)	39.4° (2015)
20	71.6°	54.1°	35%	85.3° (1975)	37.9° (2002)
21	71.2°	53.1°	35%	85.1° (1970)	36.3° (2002)
22	72.5°	53.6°	27%	87.6° (1962)	37.2° (1963)
23	72.3°	55.8°	42%	86.4° (1994)	34.5° (1963)
24	72.9°	55.4°	45%	87.8° (2010)	40.1° (2001)
25	71.4°	55°	52%	86.4° (1967)	42.6° (1992)
26	72.3°	55.4°	50%	92.1° (1985)	40.1° (1961)
27	73.4°	55.8°	47%	93° (2018)	38.1° (1961)
28	73.9°	56.5°	48%	89.2° (2006)	39.4° (1992)
29	74.7°	57°	47%	87.6° (2006)	35.2° (1965)
30	75.7°	57.6°	32%	88.3° (2023)	43.2° (1966)
31	74.8°	57.6°	42%	89.1° (2023)	42.1° (1972)