September weather forecast and climate
Moyie Springs, ID

The first month of the autumn, September, is also an enjoyable month in Moyie Springs, Idaho, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 39.9°F (4.4°C).

Temperature

In September, the average high-temperature decreases, from a moderately hot 76.3°F (24.6°C) in August, to a comfortable 65.8°F (18.8°C). In Moyie Springs, the average low-temperature is 39.9°F (4.4°C).

Humidity

In September, the average relative humidity is 64%.

Rainfall

In Moyie Springs, in September, it is raining for 9.5 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, in Moyie Springs, there are 157.1 rainfall days, and 21.61" (549mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Moyie Springs are January through April, September through December. September is the first month it typically snows in Moyie Springs, Idaho. Throughout September, in the average 0.3 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, there are 70.6 snowfall days, and 41.77" (1061mm) of snow is accumulated.

Daylight

In Moyie Springs, the average length of the day in September is 12.6h.

Sunshine

In Moyie Springs, the average sunshine in September is 9.7h.

UV index

In Moyie Springs, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 3 in September interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in September in Moyie Springs?

The average high-temperature, in September, is 65.8°F (18.8°C), while the average low-temperature is 39.9°F (4.4°C).

What is the average humidity in September in Moyie Springs?

In September, the average relative humidity is 64%.

How much does it rain in Moyie Springs in September?

In Moyie Springs, Idaho, in September, during 9.5 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

When does it start snowing in Moyie Springs?

September is the first month it typically snows in Moyie Springs. Throughout September, in the average 0.3 snowfall days, it receives 0.51" (13mm) of snow.

What is the average length of the day in September in Moyie Springs?

In Moyie Springs, Idaho, the average length of the day in September is 12.6h.

How long on average sun shines in September in Moyie Springs?

In September, the average sunshine in Moyie Springs is 9.7h.

What is the UV index intensity in September in Moyie Springs?

The average daily maximum UV index in September in Moyie Springs is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Moyie Springs, ID
  • Average high temperature in September: 65.8°F

The warmest month (with the highest average high temperature) is August (76.3°F).
The month with the lowest average high temperature is December (27.3°F).

  • Average low temperature in September: 39.9°F

The month with the highest average low temperature is August (47.7°F).
The coldest months (with the lowest average low temperature) are January and December (16.3°F).

Average pressure in September - Moyie Springs, ID
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.19").
The month with the lowest atmospheric pressure is June (29.91").

Average wind speed in September - Moyie Springs, ID
  • Average wind speed in September: 3.7mph

The windiest month (with the highest average wind speed) is June (4.3mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).

Average humidity in September - Moyie Springs, ID
  • Average humidity in September: 64%

The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (55%).

Average rainfall in September - Moyie Springs, ID
  • Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is December (2.76").
The driest month (with the least rainfall) is August (0.43").

Average rainfall days in September - Moyie Springs, ID
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is April (19.7 days).
The month with the least rainy days is August (6.5 days).

Average snowfall in September - Moyie Springs, ID
  • Average snowfall in September: 0.51"

The month with the highest snowfall is January (11.02").
Months with the least snowfall are May, June, July and August (0").

Average snowfall days in September - Moyie Springs, ID
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is December (17.4 days).
Months with the least snowfall days are May, June, July and August (0 days).

Average daylight in September / Average sunshine in September - Moyie Springs, ID
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in September: 9.7h

The month with the most sunshine is August (Average sunshine: 11.9h).
The month with the least sunshine is January (Average sunshine: 3.8h).

Average sunshine days in September - Moyie Springs, ID
  • Average sunshine days in September: 18 days

The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is March (7.7 days).

Average UV index in September - Moyie Springs, ID
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in September - Moyie Springs, ID
  • Average cloud cover in September: 25

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 15).

Average visibility in September - Moyie Springs, ID
  • Average visibility in September: 6mi

Months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).