May weather forecast
Putnam, IL

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Weather in May

The last month of the spring, May, is an agreeable month in Putnam, Illinois, with an average temperature fluctuating between 71.1°F (21.7°C) and 54°F (12.2°C).

Temperature

Putnam's transition into May sees a rise in the average high-temperature, advancing from a moderate 59.4°F (15.2°C) in April to a pleasant 71.1°F (21.7°C). An average low-temperature of 54°F (12.2°C) is observed during May nights.

Humidity

In May, the average relative humidity in Putnam is 77%.

Rainfall

May is the month with the most rainfall in Putnam. Rain falls for 18.4 days and accumulates 4.41" (112mm) of precipitation.

Snowfall

In Putnam, snow does not fall in May through September.

Daylight

The average length of the day in May in Putnam is 14h and 31min.
On the first day of the month, sunrise is at 5:54 am and sunset at 7:55 pm. On the last day of May, sunrise is at 5:27 am and sunset at 8:23 pm CDT.

Sunshine

In May, the average sunshine is 8.8h.

UV index

In Putnam, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, an average UV index of 5 transforms into the following instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Putnam in May?

May temperatures in Putnam, Illinois, vary between a high-temperature of 71.1°F (21.7°C) and a low-temperature of 54°F (12.2°C).

What is the average humidity in May in Putnam?

The average relative humidity in May in Putnam is 77%.

What is the rainiest month in Putnam?

The month with the most rainfall in Putnam is May, when the rain falls for 18.4 days and typically aggregates up to 4.41" (112mm) of precipitation.

How many days does it rain in May in Putnam?

In Putnam, in May, it is raining for 18.4 days, with typically 4.41" (112mm) of accumulated precipitation.

When it does not snow in Putnam?

May through September are months without snowfall in Putnam, Illinois.

Does it snow in Putnam in May?

In May, in Putnam, Illinois, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Putnam have in May?

The average day length in May in Putnam is 14h and 31min.

When is the sunrise / sunset in May in Putnam?

On the first day of May in Putnam, Illinois, sunrise is at 5:54 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:23 pm CDT.

How long on average sun shines in May in Putnam?

In May, the average sunshine duration is 8.8h.

What is the UV index reading in May in Putnam?

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Putnam, IL

Average temperature in May - Putnam, IL
  • Average high temperature in May: 71.1°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in May: 54°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

Average pressure in May
Putnam, IL

Average pressure in May - Putnam, IL
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Putnam, IL

Average wind speed in May - Putnam, IL
  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in May
Putnam, IL

Average humidity in May - Putnam, IL
  • Average humidity in May: 77%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

Average rainfall in May
Putnam, IL

Average rainfall in May - Putnam, IL
  • Average rainfall in May: 4.41"

The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are January and December (1.57").

Average rainfall days in May
Putnam, IL

Average rainfall days in May - Putnam, IL
  • Average rainfall days in May: 18.4 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5.9 days).

Average snowfall in May
Putnam, IL

Average snowfall in May - Putnam, IL
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Putnam, IL

Average snowfall days in May - Putnam, IL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Putnam, IL

Average daylight in May / Average sunshine in May - Putnam, IL
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in May
Putnam, IL

Average sunshine days in May - Putnam, IL
  • Average sunshine days in May: 10.7 days

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is May (10.7 days).

Average UV index in May
Putnam, IL

Average UV index in May - Putnam, IL
  • Average UV index in May: 5

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

Average cloud cover in May
Putnam, IL

Average cloud cover in May - Putnam, IL
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).

Average visibility in May
Putnam, IL

Average visibility in May - Putnam, IL
  • Average visibility in May: 6mi

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

Putnam, Illinois, USA

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