May weather forecast and climate
Otter, MT

The last month of the spring, May, is an enjoyable month in Otter, Montana, with temperature in the range of an average high of 63.7°F (17.6°C) and an average low of 43.5°F (6.4°C).

Temperature

In May, the average high-temperature rises, from a fresh 53.1°F (11.7°C) in April, to a comfortable 63.7°F (17.6°C). In May, in Otter, the average low-temperature is 43.5°F (6.4°C).

Humidity

In Otter, Montana, the average relative humidity in May is 61%.

Rainfall

The month with the most rainfall is May when the rain falls for 18 days and typically aggregates up to 2.64" (67mm) of precipitation.

Snowfall

Months with snowfall in Otter are January through May, September through December. May is the last month it regularly snows in Otter. During 1.3 snowfall days, in May, Otter aggregates 0.87" (22mm) of snow. Throughout the year, in Otter, there are 65.3 snowfall days, and 28.82" (732mm) of snow is accumulated.

Daylight

In May, the average length of the day in Otter is 14.9h.

Sunshine

In Otter, the average sunshine in May is 10.5h.

UV index

In Otter, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in May in Otter?

In Otter, Montana, in May, the average high-temperature is 63.7°F (17.6°C), and the average low-temperature is 43.5°F (6.4°C).

What is the average humidity in May in Otter?

The average relative humidity in May in Otter is 61%.

How many days does it rain in May in Otter?

In May, in Otter, the rain falls for 18 days. Throughout May, 2.64" (67mm) of precipitation is accumulated.

What is the rainiest month in Otter?

May is the month with the most rainfall. Rain falls for 18 days and accumulates 2.64" (67mm) of precipitation.

What is the last month it snows in Otter?

May is the last month it regularly snows in Otter. During 1.3 snowfall days, in May, Otter aggregates 0.87" (22mm) of snow.

How many hours of daylight does Otter have in May?

The average length of the day in May in Otter is 14.9h.

How long on average sun shines in May in Otter?

In May, the average sunshine in Otter, Montana, is 10.5h.

What is the UV index intensity in May in Otter?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in May - Otter, MT
  • Average high temperature in May: 17.6°C

The warmest month (with the highest average high temperature) is July (29.7°C).
The month with the lowest average high temperature is December (-0.5°C).

  • Average low temperature in May: 6.4°C

The month with the highest average low temperature is July (16.4°C).
The coldest months (with the lowest average low temperature) are January and February (-8.8°C).

Average pressure in May - Otter, MT
  • Average pressure in May: 1012.8mbar

The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is June (1010.7mbar).

Average wind speed in May - Otter, MT
  • Average wind speed in May: 13.9km/h

The windiest month (with the highest average wind speed) is April (14.6km/h).
The calmest month (with the lowest average wind speed) is December (10.9km/h).

Average humidity in May - Otter, MT
  • Average humidity in May: 61%

Months with the highest relative humidity are January and February (79%).
The month with the lowest relative humidity is August (40%).

Average rainfall in May - Otter, MT
  • Average rainfall in May: 67mm

The wettest month (with the highest rainfall) is May (67mm).
The driest month (with the least rainfall) is December (17mm).

Average rainfall days in May - Otter, MT
  • Average rainfall days in May: 18 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in May - Otter, MT
  • Average snowfall in May: 22mm

The month with the highest snowfall is February (132mm).
Months with the least snowfall are June, July and August (0mm).

Average snowfall days in May - Otter, MT
  • Average snowfall days in May: 1.3 days

The month with the highest number of snowfall days is February (14.3 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in May / Average sunshine in May - Otter, MT
  • Average daylight in May: 14.9h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in May: 10.5h

Months with the most sunshine are July and August (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 5.7h).

Average sunshine days in May - Otter, MT
  • Average sunshine days in May: 9.6 days

The month with the most sunshine days is September (18.2 days).
The month with the least sunshine days is May (9.6 days).

Average UV index in May - Otter, MT
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in May - Otter, MT
  • Average cloud cover in May: 31

The month with the most cloud cover is February (Cloud cover 41).
Months with the least cloud cover are July and August (Cloud cover 14).

Average visibility in May - Otter, MT
  • Average visibility in May: 10km

Months with the highest visibility are May, June, July, August, September and October (10km).
Months with the lowest visibility are January, February, March, April, November and December (9km).