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
In Rockland, the beginning of September is marked by a lowered average high-temperature, shifting from August's warm 84.4°F (29.1°C) to a still moderately hot 73.9°F (23.3°C). The September nights bear witness to a significant drop from the daytime highs, settling at an average temperature of 51.8°F (11°C).Humidity
In Rockland, the average relative humidity in September is 38%.Rainfall
In Rockland, in September, it is raining for 8.2 days, with typically 0.75" (19mm) of accumulated precipitation. In Rockland, during the entire year, the rain falls for 108.7 days and collects up to 10.47" (266mm) of precipitation.Snowfall
Months with snowfall in Rockland are January through May, September through December. September is the first month it typically snows in Rockland. Throughout September, in the average 0.2 snowfall days, it receives 0.39" (10mm) of snow. In Rockland, during the entire year, snow falls for 57.1 days and aggregates up to 25.2" (640mm) of snow.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September in Rockland, sunrise is at 6:57 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:13 pm MDT.
Sunshine
In September, the average sunshine in Rockland is 9.8h.UV index
In Rockland, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 4 during September translates into these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
What are the temperatures in Rockland in September?
What is the average humidity in September in Rockland?
How many days does it rain in September in Rockland?
When does it start to snow in Rockland?
What is the average length of the day in September in Rockland?
When is the sunrise / sunset in September in Rockland?
How long on average sun shines in September in Rockland?
What is the UV index intensity in September in Rockland?
Average temperature in September
Rockland, ID
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (29.3°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is August (58.5°F).
The coldest months (with the lowest average low temperature) are January and December (18°F).
Average pressure in September
Rockland, 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
Rockland, ID
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are January and December (7mph).
Average humidity in September
Rockland, ID
- Average humidity in September: 38%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (32%).
Average rainfall in September
Rockland, ID
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is March (1.18").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in September
Rockland, ID
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in September
Rockland, ID
- Average snowfall in September: 0.39"
The month with the highest snowfall is January (7.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Rockland, ID
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Rockland, 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 June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Rockland, ID
- Average sunshine days in September: 19.3 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is February (12.4 days).
Average UV index in September
Rockland, ID
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Rockland, ID
- Average cloud cover in September: 15
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Rockland, ID
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Rockland, Idaho, USA
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