As of 02:17 CDT

Grafton, WI weather in March

60°

Grafton, Sunday, 9 August, 02:17

Clear. Feels like 60°. High 76°, low 60°.

Pressure30.00 inHg

Wind6.4 mph W

Humidity93%

Visibility6.2 mi

Dew point58°

See detailed hourly forecast

In March, Grafton, WI averages a high of 36.9° and a low of 25.8°. About 2.5 inches of precipitation fall over the month (10 wet days). The record high is 74.3° (2025) and the record low -10.8° (2019). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	33.1°	21.2°	25%	59.4° (2020)	-9.2° (1962)
2	31.8°	19.6°	25%	51.1° (2024)	-6.2° (1980)
3	31.6°	19.6°	25%	56.3° (1974)	-3.3° (2014)
4	33.1°	21.4°	32%	60.1° (2024)	-10.8° (2019)
5	32.9°	21.9°	42%	61.7° (2022)	-2.6° (2015)
6	33.8°	22.1°	32%	56.8° (2022)	0.1° (2015)
7	34°	22.6°	22%	61.7° (2017)	-1.1° (1996)
8	35.1°	22.3°	33%	60.3° (1987)	-1.5° (1996)
9	35.2°	23.2°	33%	59.2° (2025)	-0.2° (2003)
10	35.8°	24.3°	28%	66.2° (2025)	-2.4° (2003)
11	36.3°	23.9°	27%	61.2° (2024)	5.2° (1979)
12	36.1°	25°	30%	66.6° (2024)	3° (1993)
13	37°	26.2°	37%	57.6° (2024)	6.4° (1993)
14	37.9°	26.8°	28%	58.6° (2025)	-2° (1993)
15	37.8°	25.9°	28%	65.1° (2025)	2.7° (1993)
16	37.4°	26.1°	27%	64.8° (2022)	6.1° (1997)
17	37.2°	25.9°	28%	61.5° (2022)	8.1° (1967)
18	37.4°	27.7°	32%	53.6° (2025)	8.1° (1993)
19	38.1°	27.9°	33%	53.2° (2012)	4.3° (1965)
20	37.9°	28.2°	40%	57.9° (2012)	0.9° (1965)
21	37.9°	27.5°	27%	55.9° (2025)	1.4° (1965)
22	37.9°	27.1°	32%	62.2° (2021)	11.7° (1983)
23	38.1°	27.9°	30%	52.5° (2021)	9.5° (1974)
24	37.9°	27.7°	28%	57.2° (1976)	3.9° (1974)
25	38.7°	28.2°	28%	55.4° (2020)	4.6° (1960)
26	39.2°	27.9°	35%	60.4° (2007)	7.9° (1996)
27	39.9°	29.5°	37%	57.9° (1998)	7.2° (1965)
28	41.2°	30.6°	33%	74.3° (2025)	16.3° (1970)
29	40.8°	30.7°	30%	69.3° (2025)	8.8° (1964)
30	41.5°	30.9°	33%	63.7° (2021)	3.4° (1969)
31	42.3°	31.6°	40%	58.5° (2023)	4.1° (1969)