November weather forecast and climate
Roy, MT

November, the last month of the autumn, in Roy, is another cold month, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 25.2°F (-3.8°C).

Temperature

In November, the average high-temperature drops, from a fresh 52.2°F (11.2°C) in October, to a cold 39.2°F (4°C). In Roy, Montana, in November, the average low-temperature is 25.2°F (-3.8°C).

Humidity

In November, the average relative humidity in Roy is 69%.

Rainfall

In Roy, during November, the rain falls for 6.5 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Roy, during the entire year, the rain falls for 126.2 days and collects up to 17.83" (453mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In November, in Roy, Montana, it is snowing for 9.4 days. Throughout November, 5.31" (135mm) of snow is accumulated. Throughout the year, in Roy, Montana, there are 83.4 snowfall days, and 45.51" (1156mm) of snow is accumulated.

Daylight

In November, the average length of the day in Roy is 9.3h.

Sunshine

In Roy, the average sunshine in November is 6.2h.

UV index

Months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In November, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. 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 November in Roy?

In Roy, in November, the average high-temperature is 39.2°F (4°C), and the average low-temperature is 25.2°F (-3.8°C).

What is the average humidity in November in Roy?

In November, the average relative humidity in Roy, Montana, is 69%.

How much does it rain in Roy in November?

In Roy, in November, during 6.5 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

How many days does it snow in November in Roy?

In Roy, Montana, during November, snow falls for 9.4 days and regularly aggregates up to 5.31" (135mm) of snow.

How many hours of daylight does Roy have in November?

In November, the average length of the day in Roy, Montana, is 9.3h.

How long on average sun shines in November in Roy?

The average sunshine in November in Roy is 6.2h.

What are the months with the lowest UV index in Roy?

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in November in Roy?

In November, the average daily maximum UV index in Roy is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in November - Roy, MT
  • Average high temperature in November: 4°C

The warmest month (with the highest average high temperature) is July (26°C).
Months with the lowest average high temperature are February and December (-1.6°C).

  • Average low temperature in November: -3.8°C

The month with the highest average low temperature is August (12.5°C).
The coldest month (with the lowest average low temperature) is February (-9.3°C).

Average pressure in November - Roy, MT
  • Average pressure in November: 1017.7mbar

The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is June (1010.9mbar).

Average wind speed in November - Roy, MT
  • Average wind speed in November: 15.6km/h

The windiest months (with the highest average wind speed) are January, April and October (15.9km/h).
The calmest month (with the lowest average wind speed) is August (11.9km/h).

Average humidity in November - Roy, MT
  • Average humidity in November: 69%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).

Average rainfall in November - Roy, MT
  • Average rainfall in November: 24mm

The wettest month (with the highest rainfall) is May (86mm).
The driest month (with the least rainfall) is December (18mm).

Average rainfall days in November - Roy, MT
  • Average rainfall days in November: 6.5 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).

Average snowfall in November - Roy, MT
  • Average snowfall in November: 135mm

The month with the highest snowfall is April (232mm).
Months with the least snowfall are July and August (0mm).

Average snowfall days in November - Roy, MT
  • Average snowfall days in November: 9.4 days

The month with the highest number of snowfall days is February (15.2 days).
Months with the least snowfall days are July and August (0 days).

Average daylight in November / Average sunshine in November - Roy, MT
  • Average daylight in November: 9.3h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in November: 6.2h

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 5.5h).

Average sunshine days in November - Roy, MT
  • Average sunshine days in November: 16.8 days

The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).

Average UV index in November - Roy, MT
  • Average UV index in November: 2

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in November - Roy, MT
  • Average cloud cover in November: 34

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).

Average visibility in November - Roy, MT
  • Average visibility in November: 9km

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