May weather forecastAmerican Falls, ID
May
Weather in May
Coming into May, American Falls witnesses the shift to more pleasant conditions as the weather turns significantly warmer. As expected of the late spring period, monthly highs scale beyond a comfortable 60°F (15.6°C). The town prepares to bid farewell to snowfall, with the last of the winter's traces fading out early in the month. The developing warmth encourages a further increase in daylight hours. Despite the pleasant conditions, rainfall is on a constant plane, averaging 1.1" (28mm) for the month.Temperature
May's onset brings a rise in the average high-temperature, moving from a fresh 53.4°F (11.9°C) in April to an enjoyable 64°F (17.8°C). Throughout May nights, a significant departure from daytime temperatures, with an average low of 42.4°F (5.8°C), is recognized in American Falls.Humidity
In May, the average relative humidity in American Falls, Idaho, is 51%.Rainfall
In American Falls, Idaho, during May, the rain falls for 11.6 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, there are 108.7 rainfall days, and 10.47" (266mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in American Falls. May is the last month it regularly snows in American Falls. During 0.5 snowfall days, in May, American Falls aggregates 0.12" (3mm) of snow. In American Falls, during the entire year, snow falls for 57.1 days and aggregates up to 25.2" (640mm) of snow.Daylight
In American Falls, the average length of the day in May is 14h and 40min.On the first day of the month, sunrise is at 6:24 am and sunset at 8:32 pm. On the last day of May, in American Falls, sunrise is at 5:55 am and sunset at 9:02 pm MDT.
Sunshine
In American Falls, the average sunshine in May is 10.9h.UV index
In American Falls, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In May, a regular UV index of 5 translates into these guidelines:
Heed the precautions - Suggestions to avoid sunburn are made. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
American Falls, ID
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (29.3°F).
- Average low temperature in May: 42.4°F
The month with the highest average low temperature is August (58.5°F).
The coldest months (with the lowest average low temperature) are January and December (18°F).
Average pressure in May
American Falls, ID
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
American Falls, ID
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are January and December (7mph).
Average humidity in May
American Falls, ID
- Average humidity in May: 51%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (32%).
Average rainfall in May
American Falls, ID
- Average rainfall in May: 1.1"
The wettest month (with the highest rainfall) is March (1.18").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in May
American Falls, ID
- Average rainfall days in May: 11.6 days
The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in May
American Falls, ID
- Average snowfall in May: 0.12"
The month with the highest snowfall is January (7.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
American Falls, ID
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
American Falls, ID
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 10h and 54min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in May
American Falls, ID
- Average sunshine days in May: 16.4 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is February (12.4 days).
Average UV index in May
American Falls, ID
- 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 December (UV index 1).
Average cloud cover in May
American Falls, ID
- Average cloud cover in May: 25
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in May
American Falls, ID
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
