As of 04:22 CDT

Grafton, WI weather in January

60°

Grafton, Sunday, 9 August, 04:22

Mostly clear. Feels like 61°. High 76°, low 60°.

Pressure29.97 inHg

Wind4.8 mph SW

Humidity95%

Visibility6.2 mi

Dew point59°

See detailed hourly forecast

In January, Grafton, WI averages a high of 27.4° and a low of 16.4°. About 1.9 inches of precipitation fall over the month (9 wet days). The record high is 53.4° (2018) and the record low -24° (2019). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	29.3°	18.7°	28%	45.7° (2023)	-9.9° (2018)
2	29.5°	19°	33%	49.3° (2000)	-7.4° (1979)
3	28.6°	19°	27%	48.4° (2004)	-6.5° (1979)
4	28°	17.4°	23%	48.2° (1997)	-8.1° (1981)
5	27.5°	16°	20%	47.7° (2019)	-8.1° (1988)
6	26.8°	17.8°	32%	47.3° (2008)	-14.1° (2014)
7	26.1°	15.4°	20%	51.3° (2008)	-12.1° (2014)
8	26.4°	14.7°	22%	47.7° (2003)	-5.4° (1976)
9	27.1°	16.7°	27%	48.4° (2020)	-14.4° (1982)
10	27.9°	16.7°	33%	48.7° (1975)	-18.9° (1982)
11	28.8°	17.1°	35%	53.4° (2018)	-6.5° (1977)
12	29.1°	18.9°	35%	46.4° (2013)	-7.8° (1977)
13	28.4°	17.6°	40%	43.3° (1961)	-3.6° (1977)
14	26.6°	16.3°	32%	41.4° (1987)	-13.2° (1972)
15	24.8°	15.3°	27%	38.5° (1990)	-18.8° (1972)
16	27.7°	15.6°	27%	42.4° (1973)	-17.1° (1982)
17	27.5°	16°	38%	45.7° (2025)	-22.2° (1982)
18	26.6°	15.6°	20%	45.9° (1996)	-19.1° (1994)
19	26.8°	14.4°	18%	42.8° (2013)	-18.9° (1994)
20	24.8°	14.2°	25%	46.8° (2018)	-19.8° (1985)
21	26.4°	16°	20%	45.9° (2017)	-17° (1984)
22	28.9°	18.3°	38%	44.1° (2017)	-6.5° (1970)
23	28.8°	17.8°	33%	43.7° (1967)	-22.2° (1963)
24	28°	17.1°	30%	45.9° (1967)	-12.3° (1963)
25	27.1°	16.9°	38%	46.9° (1967)	-8.9° (1963)
26	26.6°	14.7°	40%	50.2° (2018)	-17.9° (2019)
27	26.8°	15.1°	23%	46.9° (2018)	-12.1° (1986)
28	26.8°	15.6°	28%	43.5° (2025)	-14.3° (1966)
29	26.6°	14.9°	32%	47.1° (2013)	-14.8° (1965)
30	26.1°	15.3°	23%	51.6° (2025)	-24° (2019)
31	27.7°	15.6°	22%	48.6° (1989)	-23.6° (2019)