Horseshoe Bend
Idaho, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Horseshoe Bend, ID

The first month of the autumn, September, is also a moderately hot month in Horseshoe Bend, Idaho, with average temperature ranging between max 73.9°F (23.3°C) and min 50.4°F (10.2°C).

Temperature

In Horseshoe Bend, the average high-temperature drops, from a warm 84.7°F (29.3°C) in August, to a still moderately hot 73.9°F (23.3°C). In Horseshoe Bend, in September, the average low-temperature is 50.4°F (10.2°C).

Humidity

In September, the average relative humidity in Horseshoe Bend, Idaho, is 41%.

Rainfall

In Horseshoe Bend, during September, the rain falls for 7.4 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Horseshoe Bend, during the entire year, the rain falls for 103.4 days and collects up to 19.84" (504mm) of precipitation.

Snowfall

July through September are months without snowfall in Horseshoe Bend.

Daylight

The average length of the day in September is 12.5h.

Sunshine

The average sunshine in Horseshoe Bend is 9.4h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in September in Horseshoe Bend?

The average high-temperature, in September, in Horseshoe Bend, Idaho, is 73.9°F (23.3°C), while the average low-temperature is 50.4°F (10.2°C).

What is the average humidity in September in Horseshoe Bend?

In Horseshoe Bend, the average relative humidity in September is 41%.

How many days does it rain in September in Horseshoe Bend?

In September, in Horseshoe Bend, the rain falls for 7.4 days. Throughout September, 0.63" (16mm) of precipitation is accumulated.

Does it snow in Horseshoe Bend in September?

In Horseshoe Bend, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Horseshoe Bend?

In Horseshoe Bend snow does not fall in July through September.

What is the average length of the day in September in Horseshoe Bend?

In Horseshoe Bend, Idaho, the average length of the day in September is 12.5h.

How long on average sun shines in September in Horseshoe Bend?

In September, the average sunshine in Horseshoe Bend is 9.4h.

What is the UV index reading in September in Horseshoe Bend?

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.
Average temperature in September - Horseshoe Bend, ID
  • Average high temperature in September: 23.3°C

The warmest month (with the highest average high temperature) is July (30.3°C).
The month with the lowest average high temperature is December (-0.4°C).

  • Average low temperature in September: 10.2°C

The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is December (-7°C).

Average humidity in September - Horseshoe Bend, ID
  • Average humidity in September: 41%

The month with the highest relative humidity is January (85%).
Months with the lowest relative humidity are July and August (33%).

Average rainfall in September - Horseshoe Bend, ID
  • Average rainfall in September: 16mm

The wettest month (with the highest rainfall) is March (72mm).
The driest month (with the least rainfall) is July (8mm).

Average rainfall days in September - Horseshoe Bend, ID
  • Average rainfall days in September: 7.4 days

The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (4.7 days).

Average snowfall in September - Horseshoe Bend, ID
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (523mm).
Months with the least snowfall are July, August and September (0mm).

Average snowfall days in September - Horseshoe Bend, ID
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is January (14.8 days).
Months with the least snowfall days are July and August (0 days).

Average daylight in September / Average sunshine in September - Horseshoe Bend, ID
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 9.4h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.2h).

Average UV index in September - Horseshoe Bend, ID
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).