September weather forecastDietrich, ID
September
Weather in September
The first month of the autumn, September, is still a warm month in Dietrich, Idaho, with temperature in the range of an average high of 77.2°F (25.1°C) and an average low of 54°F (12.2°C).Temperature
The average high-temperature decreases in September, shifting from a tropical 88.2°F (31.2°C) in August to a moderately hot 77.2°F (25.1°C). A dramatic downturn marks the September nights, with lows averaging at a cool 54°F (12.2°C).Humidity
In Dietrich, the average relative humidity in September is 35%.Rainfall
In September, the rain falls for 5.9 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. In Dietrich, during the entire year, the rain falls for 86.9 days and collects up to 8.98" (228mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 7:02 am and sunset at 8:11 pm. On the last day of September, sunrise is at 7:34 am and sunset at 7:19 pm MDT.
Sunshine
In September, the average sunshine is 9.6h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dietrich, ID
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (32.9°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in September
Dietrich, ID
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Dietrich, ID
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Dietrich, ID
- Average humidity in September: 35%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (29%).
Average rainfall in September
Dietrich, ID
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is December (1.3").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Dietrich, ID
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Dietrich, ID
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Dietrich, ID
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dietrich, ID
- Average daylight in September: 12h and 30min
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 6min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Dietrich, ID
- Average sunshine days in September: 22.3 days
The month with the most sunshine days is July (25.2 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in September
Dietrich, ID
- Average UV index in September: 4
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
Dietrich, ID
- Average cloud cover in September: 13
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in September
Dietrich, 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).
