Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The arrival of May signals an increase in the average high-temperature, moving from an enjoyable 63.5°F (17.5°C) in April to a moderately hot 73.4°F (23°C). Saint Peter reports an average low-temperature of 57°F (13.9°C) during the nights of May.Humidity
In Saint Peter, the average relative humidity in May is 80%.Rainfall
In Saint Peter, during May, the rain falls for 15.7 days and regularly aggregates up to 2.56" (65mm) of precipitation. Throughout the year, there are 139.3 rainfall days, and 23.94" (608mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Saint Peter.Daylight
The average length of the day in May is 14h and 19min.On the first day of the month, sunrise is at 5:56 am and sunset at 7:48 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:14 pm CDT.
Sunshine
The average sunshine in May is 9h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In May, a regular UV index of 5 translates into these guidelines:
Undertake precautions - Guarding against sun damage is counselled. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Saint Peter in May?
What is the average humidity in May in Saint Peter?
How much does it rain in Saint Peter in May?
When it does not snow in Saint Peter?
Does it snow in Saint Peter in May?
How many hours of daylight does Saint Peter have in May?
What time are sunrise and sunset in May in Saint Peter?
How many hours of sunshine does Saint Peter have in May?
What is the UV index reading in May in Saint Peter?
Average temperature in May
Saint Peter, IL
- Average high temperature in May: 73.4°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in May: 57°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in May
Saint Peter, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Saint Peter, IL
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in May
Saint Peter, IL
- Average humidity in May: 80%
The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Saint Peter, IL
- Average rainfall in May: 2.56"
The wettest months (with the highest rainfall) are April and June (2.95").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in May
Saint Peter, IL
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in May
Saint Peter, IL
- Average snowfall in May: 0"
The month with the highest snowfall is December (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Saint Peter, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.7 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
Saint Peter, IL
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in May
Saint Peter, IL
- Average sunshine days in May: 12.3 days
The months with the most sunshine days are January and November (19.5 days).
The months with the least sunshine days are May and July (12.3 days).
Average UV index in May
Saint Peter, IL
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Saint Peter, IL
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and July (Cloud cover 29).
Average visibility in May
Saint Peter, IL
- 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).
Saint Peter, Illinois, USA
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