September weather forecast
Reynolds, ID

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Weather in September

The first month of the autumn, September, is still a warm month in Reynolds, Idaho, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 55.9°F (13.3°C).

Temperature

The shift to September brings a decrease in the average high-temperature, falling from a tropical 89.8°F (32.1°C) in August to a warm 79°F (26.1°C). In the face of high daytime temperatures, Reynolds witnesses a consistent average nighttime low of 55.9°F (13.3°C) during September.

Humidity

The average relative humidity in September is 35%.

Rainfall

In September, the rain falls for 4.9 days. Throughout September, 0.2" (5mm) of precipitation is accumulated. Throughout the year, in Reynolds, there are 98.5 rainfall days, and 9.69" (246mm) of precipitation is accumulated.

Snowfall

In Reynolds, Idaho, snow does not fall in May through October.

Daylight

The average length of the day in September in Reynolds is 12h and 29min.
On the first day of September, sunrise is at 7:12 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 7:29 pm MDT.

Sunshine

In September, the average sunshine is 9.5h.

UV index

In Reynolds, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 5 in September leads to these guidelines:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Updated: Feb 12, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What are the temperatures in Reynolds in September?

Reynolds in September has an average high-temperature of 79°F (26.1°C) and an average low-temperature of 55.9°F (13.3°C).

What is the average humidity in September in Reynolds?

The average relative humidity in September in Reynolds is 35%.

How many days does it rain in September in Reynolds?

In Reynolds, during September, the rain falls for 4.9 days and regularly aggregates up to 0.2" (5mm) of precipitation.

When it does not snow in Reynolds?

May through October are months without snowfall in Reynolds, Idaho.

How many hours of daylight does Reynolds have in September?

In Reynolds, Idaho, the average day length in September is 12h and 29min.

When is the sunrise / sunset in September in Reynolds?

In September, on the first day of the month, sunrise is at 7:12 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 7:29 pm MDT.

How many hours of sunshine does Reynolds have in September?

The average sunshine duration in September in Reynolds, Idaho, is 9.5h.

How high is the UV index in September in Reynolds?

The average daily maximum UV index in September in Reynolds, Idaho, is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Reynolds, ID

Average temperature in September - Reynolds, ID
  • Average high temperature in September: 79°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is December (36.5°F).

  • Average low temperature in September: 55.9°F

The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).

Average pressure in September
Reynolds, ID

Average pressure in September - Reynolds, ID
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in September
Reynolds, ID

Average wind speed in September - Reynolds, ID
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).

Average humidity in September
Reynolds, ID

Average humidity in September - Reynolds, ID
  • Average humidity in September: 35%

The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are July and August (29%).

Average rainfall in September
Reynolds, ID

Average rainfall in September - Reynolds, ID
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is March (1.46").
The driest months (with the least rainfall) are July and August (0.12").

Average rainfall days in September
Reynolds, ID

Average rainfall days in September - Reynolds, ID
  • Average rainfall days in September: 4.9 days

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (3.1 days).

Average snowfall in September
Reynolds, ID

Average snowfall in September - Reynolds, ID
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.23").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Reynolds, ID

Average snowfall days in September - Reynolds, ID
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (6.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Reynolds, ID

Average daylight in September / Average sunshine in September - Reynolds, ID
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).

Average sunshine days in September
Reynolds, ID

Average sunshine days in September - Reynolds, ID
  • Average sunshine days in September: 23.3 days

The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (14 days).

Average UV index in September
Reynolds, ID

Average UV index in September - Reynolds, ID
  • Average UV index in September: 5

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

Average cloud cover in September
Reynolds, ID

Average cloud cover in September - Reynolds, ID
  • Average cloud cover in September: 14

The months with the most cloud cover are January and December (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 8).

Average visibility in September
Reynolds, ID

Average visibility in September - Reynolds, ID
  • Average visibility in September: 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).

Reynolds, Idaho, USA

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