As of 04:22 CDT

Grafton, WI weather in April

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 April, Grafton, WI averages a high of 46.1° and a low of 36.3°. About 3.7 inches of precipitation fall over the month (12 wet days). The record high is 79.3° (2023) and the record low 10.8° (1972). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	42.1°	31.3°	40%	56.8° (1986)	14.9° (1964)
2	42.1°	31.8°	43%	60.1° (2025)	21.7° (2018)
3	42.4°	32.7°	47%	67.3° (2021)	16.3° (1964)
4	41.9°	31.6°	43%	57.2° (1981)	11.5° (1964)
5	41.9°	31.1°	38%	72.7° (2021)	14.9° (2018)
6	43°	32.5°	32%	76.5° (2021)	13.6° (1982)
7	43.2°	32.5°	40%	73.8° (2020)	12.4° (1982)
8	42.6°	32.7°	40%	66.6° (2019)	10.8° (1972)
9	43°	33.4°	37%	67.8° (2017)	16.7° (1972)
10	44.6°	33.6°	27%	75° (2017)	23.5° (1989)
11	44.6°	35.1°	40%	74.3° (2023)	22.6° (1973)
12	45.7°	36°	42%	79.3° (2023)	21.7° (1975)
13	45.5°	36.7°	35%	77.9° (2023)	25.2° (1975)
14	46.2°	36.7°	43%	72.5° (2024)	25° (2020)
15	47.5°	37.4°	35%	77.7° (2017)	23.2° (2014)
16	47.3°	37.4°	50%	68.7° (2017)	23.2° (2020)
17	46.6°	37°	37%	65.8° (2024)	21.4° (2018)
18	48.4°	37.6°	23%	70° (2025)	21.9° (2018)
19	47.5°	38.5°	40%	63.5° (2004)	27.7° (1983)
20	47.7°	38.3°	55%	69.1° (2023)	23.2° (2018)
21	48.2°	38.8°	45%	69.6° (2019)	27.7° (2021)
22	47.7°	38.3°	32%	66° (2019)	27.7° (2021)
23	48.9°	38.5°	38%	69.6° (2022)	29.7° (2023)
24	48.7°	38.8°	37%	71.6° (2022)	30° (1980)
25	49.1°	39.6°	37%	61.5° (2019)	29.5° (1972)
26	49.1°	39.2°	32%	71.8° (2017)	31.5° (2023)
27	48.9°	39.7°	33%	77.2° (2024)	25.7° (2022)
28	48.6°	39.7°	40%	72° (2025)	31.1° (2018)
29	49.6°	40.5°	43%	71.1° (2025)	28.6° (2018)
30	50.2°	41°	42%	68.7° (2018)	32.2° (1978)