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 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
As April transitions into May, a subtle temperature shift is observed, with average highs adjusting from 77.9°F (25.5°C) to a still warm 85.3°F (29.6°C). River Falls's average nighttime temperature descends significantly from the day's peak in May, settling at an enjoyable 63.3°F (17.4°C).Heat index
In May, the heat index is computed to be a hot 93.2°F (34°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
The average relative humidity in May is 71%.Rainfall
In River Falls, during May, the rain falls for 9.3 days and regularly aggregates up to 0.98" (25mm) of precipitation. In River Falls, during the entire year, the rain falls for 132.9 days and collects up to 13.39" (340mm) of precipitation.Snowfall
In River Falls, snow does not fall in March through November.Daylight
In River Falls, the average length of the day in May is 13h and 46min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:25 pm. On the last day of May, in River Falls, sunrise is at 5:42 am and sunset at 7:45 pm CDT.
Sunshine
In May, the average sunshine is 10.6h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In May, an average UV index of 7 transforms into the following instructions:
Deflect overexposure. Sun protection is a necessity. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May in River Falls?
When are sunrise and sunset in May?
How long on average sun shines in May?
When is the highest UV index?
How high is the UV index in May?
Average temperature in May
River Falls, AL
- Average high temperature in May: 85.3°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (57.7°F).
- Average low temperature in May: 63.3°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).
Average pressure in May
River Falls, AL
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in May
River Falls, AL
- Average wind speed in May: 5.6mph
The windiest month (with the highest average wind speed) is January (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in May
River Falls, AL
- Average humidity in May: 71%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
River Falls, AL
- Average rainfall in May: 0.98"
The wettest month (with the highest rainfall) is August (1.65").
The driest months (with the least rainfall) are March, September and November (0.75").
Average rainfall days in May
River Falls, AL
- Average rainfall days in May: 9.3 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (5.7 days).
Average snowfall days in May
River Falls, AL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
River Falls, AL
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in May
River Falls, AL
- Average sunshine days in May: 19.4 days
The month with the most sunshine days is November (23.1 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in May
River Falls, AL
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in May
River Falls, AL
- Average cloud cover in May: 31
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in May
River Falls, AL
- Average visibility in May: 6mi
The months with the highest visibility are January, March, April, May, June, October and November (6mi).
The months with the lowest visibility are February, July, August, September and December (5mi).
River Falls, Alabama, USA
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