May weather forecastFallon, MT
May
Weather in May
May, the last month of the spring in Fallon, is an enjoyable month, with an average temperature ranging between max 64.9°F (18.3°C) and min 46.9°F (8.3°C).Temperature
In Fallon, the onset of May comes with an increased average high-temperature, moving from April's cool 53.4°F (11.9°C) to a comfortable 64.9°F (18.3°C). The month of May records an average low-temperature of 46.9°F (8.3°C).Humidity
The average relative humidity in May is 56%.Rainfall
The month with the most rainfall is May, when the rain falls for 13.7 days and typically aggregates up to 2.2" (56mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1 snowfall days, in May, Fallon aggregates 0.79" (20mm) of snow. In Fallon, during the entire year, snow falls for 58.7 days and aggregates up to 17.28" (439mm) of snow.Daylight
In Fallon, the average length of the day in May is 15h and 4min.On the first day of the month, sunrise is at 5:43 am and sunset at 8:11 pm. On the last day of May, sunrise is at 5:09 am and sunset at 8:46 pm MDT.
Sunshine
In May, the average sunshine is 10h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fallon, MT
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in May: 46.9°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in May
Fallon, MT
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in May
Fallon, MT
- Average wind speed in May: 10.5mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity in May
Fallon, MT
- Average humidity in May: 56%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (43%).
Average rainfall in May
Fallon, MT
- Average rainfall in May: 2.2"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in May
Fallon, MT
- Average rainfall days in May: 13.7 days
The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is February (4 days).
Average snowfall in May
Fallon, MT
- Average snowfall in May: 0.79"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Fallon, MT
- Average snowfall days in May: 1 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Fallon, MT
- Average daylight in May: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in May
Fallon, MT
- Average sunshine days in May: 14.6 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in May
Fallon, MT
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in May
Fallon, MT
- Average cloud cover in May: 34
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in May
Fallon, MT
- 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).
