Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Arimo in September experiences a subtle temperature decline, with average high-temperatures reducing from a moderately hot 83.7°F (28.7°C) in August to a pleasant 73°F (22.8°C). Arimo receives a consistent average low-temperature of 49.5°F (9.7°C) in September, a substantial dip from the day's heat.Humidity
In Arimo, the average relative humidity in September is 42%.Rainfall
In September, the rain falls for 8.6 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. Throughout the year, there are 118.3 rainfall days, and 16.42" (417mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Arimo. Throughout September, in the average 0.1 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, in Arimo, there are 68.7 snowfall days, and 48.82" (1240mm) of snow is accumulated.Daylight
The average length of the day in September in Arimo is 12h and 28min.On the first day of the month, sunrise is at 6:54 am and sunset at 8:02 pm. On the last day of September, in Arimo, sunrise is at 7:25 am and sunset at 7:11 pm MDT.
Sunshine
In Arimo, the average sunshine in September is 9.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 4 in September leads to these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Around midday, solar radiation is most harmful; hence, exposure should be limited. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What is the usual temperature for Arimo in September?
What is the average humidity in September in Arimo?
How much does it rain in Arimo in September?
When does it start snowing in Arimo?
How many hours of daylight does Arimo have in September?
What time are sunrise and sunset in September in Arimo?
How long on average sun shines in September in Arimo?
What is the UV index reading in September in Arimo?
Average temperature in September
Arimo, ID
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (28.9°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in September
Arimo, ID
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Arimo, ID
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in September
Arimo, ID
- Average humidity in September: 42%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (35%).
Average rainfall in September
Arimo, ID
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is February (2.05").
The driest month (with the least rainfall) is July (0.55").
Average rainfall days in September
Arimo, ID
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Arimo, ID
- Average snowfall in September: 0.35"
The month with the highest snowfall is January (13.78").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Arimo, ID
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Arimo, 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 6min).
- Average sunshine in September: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Arimo, ID
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is February (9.9 days).
Average UV index in September
Arimo, 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 January (UV index 1).
Average cloud cover in September
Arimo, ID
- Average cloud cover in September: 15
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Arimo, ID
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Arimo, Idaho, USA
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