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
Dayton experiences a temperature shift with the start of May, with average high-temperatures moving from a frosty 47.8°F (8.8°C) in April to a comfortable 60.8°F (16°C). In May, Dayton endures a notable temperature shift from day to night, with lows averaging at a wintry 36.7°F (2.6°C).Humidity
In Dayton, the average relative humidity in May is 67%.Rainfall
In May, the rain falls for 14.1 days. Throughout May, 1.5" (38mm) of precipitation is accumulated. In Dayton, during the entire year, the rain falls for 129.8 days and collects up to 16.42" (417mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In May, it is snowing for 2.3 days. Throughout May, 0.83" (21mm) of snow is accumulated. In Dayton, during the entire year, snow falls for 117.4 days and aggregates up to 58.62" (1489mm) of snow.Daylight
In Dayton, the average length of the day in May is 15h and 11min.On the first day of May, sunrise is at 6:17 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 9:27 pm MDT.
Sunshine
In Dayton, Montana, the average sunshine in May is 10.1h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 4 during May morphs into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Dayton in May?
What is the average humidity in May?
How much does it rain in May?
How much does it snow in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Dayton have in May?
How high is the UV index in May?
Average temperature in May
Dayton, MT
- Average high temperature in May: 60.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in May: 36.7°F
The month with the highest average low temperature is July (48.4°F).
The coldest months (with the lowest average low temperature) are January and December (16.2°F).
Average pressure in May
Dayton, MT
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Dayton, MT
- Average wind speed in May: 4.3mph
The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest months (with the lowest average wind speed) are August and December (3.6mph).
Average humidity in May
Dayton, MT
- Average humidity in May: 67%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (52%).
Average rainfall in May
Dayton, MT
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in May
Dayton, MT
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is April (15.9 days).
The month with the least rainy days is December (6.5 days).
Average snowfall in May
Dayton, MT
- Average snowfall in May: 0.83"
The month with the highest snowfall is December (12.36").
The months with the least snowfall are July and August (0").
Average snowfall days in May
Dayton, MT
- Average snowfall days in May: 2.3 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in May /
Average sunshine in May
Dayton, MT
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Dayton, MT
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in May
Dayton, MT
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Dayton, MT
- Average cloud cover in May: 36
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in May
Dayton, MT
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Dayton, Montana, USA
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