May weather forecastManitowoc, WI

A tree outside of the iconic stone old courthouse in Manitowoc City, Wisconsin

May

Weather in May

May in Manitowoc encompasses the full swing of spring. The climate continues to warm from April, inviting lively outdoor activities. Rainfall averages around 1.22" (31mm), maintaining a consistent water supply for plants to flourish. Facilitating this growth, the amount of sunshine and daylight hours increase. This month, Manitowoc embraces the robust beauty of spring.

Temperature

May signals a shift in the average high-temperature, moving from April's chilly 46°F (7.8°C) to a mild 56.5°F (13.6°C). In May, Manitowoc encounters an average low-temperature of 45.1°F (7.3°C) during the night.

Humidity

The average relative humidity in May in Manitowoc is 79%.

Rainfall

In Manitowoc, in May, it is raining for 11.4 days, with typically 1.22" (31mm) of accumulated precipitation. In Manitowoc, Wisconsin, during the entire year, the rain falls for 108.5 days and collects up to 10.67" (271mm) of precipitation.

Snowfall

Months with snowfall in Manitowoc are January through May, October through December. May is the last month it regularly snows in Manitowoc. During 0.2 snowfall days, in May, Manitowoc aggregates 0.04" (1mm) of snow. In Manitowoc, during the entire year, snow falls for 43 days and aggregates up to 4.72" (120mm) of snow.

Ocean temperature

In Manitowoc, Wisconsin, the average seawater temperature in May is 40.5°F (4.7°C).
Note: In the case of swimming, the extreme coldness, danger, and life-threatening nature of this situation are apparent. Without insulated waterproof wear, hypothermia sets in rapidly.

Daylight

In May, the average length of the day is 14h and 47min.
On the first day of the month, sunrise is at 5:40 am and sunset at 7:54 pm. On the last day of May, in Manitowoc, sunrise is at 5:10 am and sunset at 8:26 pm CDT.

Sunshine

In Manitowoc, Wisconsin, the average sunshine in May is 9.1h.

UV index

The average daily maximum UV index in May in Manitowoc is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: In May, the maximum UV index of 4 transforms into these recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature in Manitowoc during May is 56.5°F (13.6°C) and the low-temperature is 45.1°F (7.3°C).

In May, the average relative humidity in Manitowoc is 79%.

In May, in Manitowoc, the rain falls for 11.4 days. Throughout May, 1.22" (31mm) of precipitation is accumulated.

May is the last month it regularly snows in Manitowoc, Wisconsin. During 0.2 snowfall days, in May, Manitowoc aggregates 0.04" (1mm) of snow.

In Manitowoc, the average seawater temperature in May is 40.5°F (4.7°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

In May, the average day length is 14h and 47min.

In May, on the first day of the month, sunrise is at 5:40 am and sunset at 7:54 pm. On the last day of the month, in Manitowoc, Wisconsin, sunrise is at 5:10 am and sunset at 8:26 pm CDT.

The average sunshine duration in May is 9.1h.

In Manitowoc, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

46°F

56.5°F

65.8°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.4mph

10.6mph

9.4mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

2.2

0.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

15.4

17.8

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Manitowoc, WI

Average high temperature in May: 56.5°F

The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is January (25.2°F).

Average low temperature in May: 45.1°F

The month with the highest average low temperature is August (63°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average pressure in May
Manitowoc, WI

Average pressure in May: 29.97"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Manitowoc, WI

Average wind speed in May: 9.9mph

The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).

Average humidity in May
Manitowoc, WI

Average humidity in May: 79%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are October and November (77%).

Average rainfall in May
Manitowoc, WI

Average rainfall in May: 1.22"

The wettest month (with the highest rainfall) is July (1.34").
The driest months (with the least rainfall) are February and November (0.47").

Average rainfall days in May
Manitowoc, WI

Average rainfall days in May: 11.4 days

The months with the highest number of rainy days are June and July (12.1 days).
The month with the least rainy days is January (3.9 days).

Average snowfall in May
Manitowoc, WI

Average snowfall in May: 0.04"

The month with the highest snowfall is January (1.26").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Manitowoc, WI

Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in May
Manitowoc, WI

Average sea temperature in May: 40.4°F

The best month for swimming (with the highest average sea temperature) is August (69.7°F).
The coldest month (with the lowest average sea temperature) is February (36.6°F).

Average daylight in May /
Average sunshine in May
Manitowoc, WI

Average daylight in May: 14h and 48min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

Average sunshine in May: 9h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in May
Manitowoc, WI

Average sunshine days in May: 17.8 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is February (14.6 days).

Average UV index in May
Manitowoc, WI

Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in May
Manitowoc, WI

Average cloud cover in May: 39

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 27).

Average visibility in May
Manitowoc, WI

Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).