May weather forecast
Brockton, MT

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Weather in May

The last month of the spring, May, is a comfortable month in Brockton, Montana, with an average temperature fluctuating between 47.3°F (8.5°C) and 65.8°F (18.8°C).

Temperature

May's arrival sees a rise in the average high-temperature, jumping from April's cool 52.3°F (11.3°C) to a refreshing 65.8°F (18.8°C). Brockton's nights in May cool down to an average low-temperature of 47.3°F (8.5°C).

Humidity

In May, the average relative humidity in Brockton is 53%.

Rainfall

The month with the most rainfall in Brockton is May, when the rain falls for 13.1 days and typically aggregates up to 1.89" (48mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Brockton. During 0.5 snowfall days, in May, Brockton aggregates 0.28" (7mm) of snow. In Brockton, during the entire year, snow falls for 63.4 days and aggregates up to 17.99" (457mm) of snow.

Daylight

In Brockton, the average length of the day in May is 15h and 13min.
On the first day of the month, sunrise is at 5:39 am and sunset at 8:13 pm. On the last day of May, in Brockton, sunrise is at 5:03 am and sunset at 8:51 pm MDT.

Sunshine

In May, the average sunshine is 10h.

UV index

The average daily maximum UV index in May in Brockton is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 5 in May leads to these recommendations:
Exercise prevention - Warding off sunburn is urged. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What are the temperatures in Brockton in May?

In May, in Brockton, the average high-temperature is 65.8°F (18.8°C), and the average low-temperature is 47.3°F (8.5°C).

What is the average humidity in May in Brockton?

In May, the average relative humidity in Brockton, Montana, is 53%.

What is the wettest month in Brockton?

The month with the most rainfall in Brockton, Montana, is May, when the rain falls for 13.1 days and typically aggregates up to 1.89" (48mm) of precipitation.

How much does it rain in Brockton in May?

In Brockton, Montana, in May, during 13.1 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

What is the last month it snows in Brockton?

May is the last month it regularly snows in Brockton. During 0.5 snowfall days, in May, Brockton aggregates 0.28" (7mm) of snow.

What is the average length of the day in May in Brockton?

In May, the average day length is 15h and 13min.

When is the sunrise / sunset in May in Brockton?

On the first day of May, sunrise is at 5:39 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:03 am and sunset at 8:51 pm MDT.

How many hours of sunshine does Brockton have in May?

In Brockton, Montana, the average sunshine duration in May is 10h.

What is the UV index reading in May in Brockton?

In Brockton, Montana, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
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
Brockton, MT

Average temperature in May - Brockton, MT
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is February (23°F).

  • Average low temperature in May: 47.3°F

The month with the highest average low temperature is July (63.7°F).
The coldest months (with the lowest average low temperature) are January and February (10.2°F).

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Average pressure in May
Brockton, MT

Average pressure in May - Brockton, MT
  • Average pressure in May: 29.92"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).

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Average wind speed in May
Brockton, MT

Average wind speed in May - Brockton, MT
  • Average wind speed in May: 10.6mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).

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Average humidity in May
Brockton, MT

Average humidity in May - Brockton, MT
  • Average humidity in May: 53%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).

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Average rainfall in May
Brockton, MT

Average rainfall in May - Brockton, MT
  • Average rainfall in May: 1.89"

The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in May
Brockton, MT

Average rainfall days in May - Brockton, MT
  • Average rainfall days in May: 13.1 days

The month with the highest number of rainy days is May (13.1 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in May
Brockton, MT

Average snowfall in May - Brockton, MT
  • Average snowfall in May: 0.28"

The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Brockton, MT

Average snowfall days in May - Brockton, MT
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is December (13.6 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in May / Average sunshine in May - Brockton, 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 24min).

  • Average sunshine in May: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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Average sunshine days in May
Brockton, MT

Average sunshine days in May - Brockton, MT
  • Average sunshine days in May: 15.4 days

The month with the most sunshine days is September (21.4 days).
The month with the least sunshine days is April (13.8 days).

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Average UV index in May
Brockton, MT

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Brockton, MT

Average cloud cover in May - Brockton, MT
  • Average cloud cover in May: 33

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 16).

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Average visibility in May
Brockton, MT

Average visibility in May - Brockton, 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).

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Brockton, Montana, USA

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