May weather forecast
Dayton, MT

Share

Weather in May

May, the last month of the spring in Dayton, is a comfortable month, with an average temperature ranging between min 36.7°F (2.6°C) and max 60.8°F (16°C).

Temperature

The onset of May marks an increase in the average high-temperature, moving from a chilly 47.8°F (8.8°C) in April to an enjoyable 60.8°F (16°C). Dayton records a marked daily temperature contrast, with an average low-temperature of 36.7°F (2.6°C) during the nights of May.

Humidity

The average relative humidity in May is 67%.

Rainfall

In Dayton, in May, during 14.1 rainfall days, 1.5" (38mm) of precipitation is typically 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 Dayton. In Dayton, during May, snow falls for 2.3 days and regularly aggregates up to 0.83" (21mm) of snow. Throughout the year, in Dayton, there are 117.4 snowfall days, and 58.62" (1489mm) of snow is accumulated.

Daylight

In Dayton, Montana, the average length of the day in May is 15h and 11min.
On the first day of May in Dayton, 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

The average sunshine in May in Dayton is 10.1h.

UV index

In May, the average daily maximum UV index in Dayton, Montana, is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 4 translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
[Resources]

Frequently asked questions

What are May temperatures in Dayton?

Dayton in May has an average high-temperature of 60.8°F (16°C) and an average low-temperature of 36.7°F (2.6°C).

What is the average humidity in May in Dayton?

In Dayton, the average relative humidity in May is 67%.

How much does it rain in Dayton in May?

In Dayton, in May, it is raining for 14.1 days, with typically 1.5" (38mm) of accumulated precipitation.

How many days does it snow in May in Dayton?

In May, in Dayton, Montana, it is snowing for 2.3 days. Throughout May, 0.83" (21mm) of snow is accumulated.

How many hours of daylight does Dayton have in May?

The average day length in May in Dayton, Montana, is 15h and 11min.

When are sunrise and sunset in May in Dayton?

On the first day of May in Dayton, 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.

How long on average sun shines in May in Dayton?

In May, the average sunshine duration in Dayton is 10.1h.

What is the UV index intensity in May in Dayton?

In Dayton, Montana, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Dayton, MT

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).

[Resources]

Average pressure in May
Dayton, MT

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).

[Resources]

Average wind speed in May
Dayton, MT

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).

[Resources]

Average humidity in May
Dayton, MT

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%).

[Resources]

Average rainfall in May
Dayton, MT

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").

[Resources]

Average rainfall days in May
Dayton, MT

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).

[Resources]

Average snowfall in May
Dayton, MT

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").

[Resources]

Average snowfall days in May
Dayton, MT

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).

[Resources]

Average daylight in May /
Average sunshine in May
Dayton, MT

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).

[Resources]

Average sunshine days in May
Dayton, MT

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).

[Resources]

Average UV index in May
Dayton, MT

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).

[Resources]

Average cloud cover in May
Dayton, MT

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).

[Resources]

Average visibility in May
Dayton, MT

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).

[Resources]

Dayton, Montana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location