September weather forecastBayview, ID
September
Weather in September
September sees a noticeable change in Bayview's weather as temperatures ease from 69.8°F (21°C) to 42.6°F (5.9°C), heralding the approach of the fall season. Despite the unmoved averages from August, there's a marked decrease in daily temperatures. The city basks in its after-summer glow, characterized by shorter daylight hours and chillier winds. Though the days are still bright, the reduced daylight hours and cooling breezes hint towards the imminent arrival of autumn. As Bayview transitions from the warmth of summer to cooler fall temperatures, the cityscape starts to change, with leaves turning to golden hues.Temperature
Bayview, Idaho, in September demonstrates a small temperature transition, adjusting from an average high of a moderately hot 80.6°F (27°C) in August to an agreeable 69.8°F (21°C). September, marked by an average low-temperature of 42.6°F (5.9°C), indicates a large temperature drop from the daytime peak.Humidity
The average relative humidity in September in Bayview is 61%.Rainfall
In Bayview, in September, it is raining for 9.5 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 145.7 rainfall days, and 23.78" (604mm) of precipitation is accumulated.Snowfall
Months with snowfall in Bayview are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 78 snowfall days, and 56.73" (1441mm) of snow is accumulated.Daylight
In Bayview, the average length of the day in September is 12h and 33min.On the first day of September, sunrise is at 6:05 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:26 pm PDT.
Sunshine
In Bayview, the average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 3 during September translates into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bayview, ID
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in September: 42.6°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.4°F).
Average pressure in September
Bayview, ID
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in September
Bayview, ID
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).
Average humidity in September
Bayview, ID
- Average humidity in September: 61%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (51%).
Average rainfall in September
Bayview, ID
- Average rainfall in September: 1.02"
The wettest months (with the highest rainfall) are January and December (3.07").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in September
Bayview, ID
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is April (18.1 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in September
Bayview, ID
- Average snowfall in September: 0.2"
The month with the highest snowfall is January (15.94").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Bayview, ID
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (17.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Bayview, ID
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 18min).
Average sunshine days in September
Bayview, ID
- Average sunshine days in September: 19.3 days
The month with the most sunshine days is August (22.2 days).
The month with the least sunshine days is March (8.4 days).
Average UV index in September
Bayview, ID
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in September
Bayview, ID
- Average cloud cover in September: 25
The months with the most cloud cover are January and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Bayview, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
