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
September is marked by a significant decrease, with the average high-temperature retreating from a moderate 14.9°C (58.8°F) in August to a cold 5.9°C (42.6°F). Nighttime temperatures consistently average a freezing cold -0.3°C (31.5°F) during September.Humidity
The average relative humidity in September is 77%.Rainfall
In September, in Ust-Yansk, the rain falls for 7.5 days. Throughout September, 16mm (0.63") of precipitation is accumulated. In Ust-Yansk, during the entire year, the rain falls for 50.8 days and collects up to 150mm (5.91") of precipitation.Snowfall
January through June, August through December are months with snowfall in Ust-Yansk. In Ust-Yansk, in September, during 7 snowfall days, 24mm (0.94") of snow is typically accumulated. Throughout the year, in Ust-Yansk, Russia, there are 116.7 snowfall days, and 483mm (19.02") of snow is accumulated.Daylight
The average length of the day in September in Ust-Yansk is 13h and 29min.On the first day of September, sunrise is at 05:05 and sunset at 20:43. On the last day of the month, sunrise is at 07:08 and sunset at 18:20 +10.
Sunshine
In Ust-Yansk, the average sunshine in September is 5.4h.UV index
January through April, September, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 1 translates into these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
Is September cold in Ust-Yansk?
What is the average humidity in September in Ust-Yansk?
How many days does it rain in September in Ust-Yansk?
How many days does it snow in September in Ust-Yansk?
What is the average length of the day in September in Ust-Yansk?
When are sunrise and sunset in September in Ust-Yansk?
How long on average sun shines in September in Ust-Yansk?
When is the lowest UV index in Ust-Yansk?
What is the UV index reading in September in Ust-Yansk?
Average temperature in September
Ust-Yansk, Russia
- Average high temperature in September: 5.9°C
The warmest month (with the highest average high temperature) is July (16.9°C).
The month with the lowest average high temperature is February (-29.5°C).
- Average low temperature in September: -0.3°C
The month with the highest average low temperature is July (7.7°C).
The coldest month (with the lowest average low temperature) is February (-34.7°C).
Average pressure in September
Ust-Yansk, Russia
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is December (1023.8mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in September
Ust-Yansk, Russia
- Average wind speed in September: 13.1km/h
The windiest month (with the highest average wind speed) is July (16km/h).
The calmest month (with the lowest average wind speed) is December (9.9km/h).
Average humidity in September
Ust-Yansk, Russia
- Average humidity in September: 77%
The months with the highest relative humidity are February, April and November (93%).
The months with the lowest relative humidity are June and July (60%).
Average rainfall in September
Ust-Yansk, Russia
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is August (23mm).
The driest months (with the least rainfall) are January, February and March (4mm).
Average rainfall days in September
Ust-Yansk, Russia
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is July (11.3 days).
The month with the least rainy days is February (0.2 days).
Average snowfall in September
Ust-Yansk, Russia
- Average snowfall in September: 24mm
The month with the highest snowfall is May (109mm).
The month with the least snowfall is July (0mm).
Average snowfall days in September
Ust-Yansk, Russia
- Average snowfall days in September: 7 days
The month with the highest number of snowfall days is May (16.5 days).
The month with the least snowfall days is July (0.4 days).
Average daylight in September /
Average sunshine in September
Ust-Yansk, Russia
- Average daylight in September: 13h and 3min
The month with the longest days is August (Average daylight: 18h and 48min).
The months with the shortest days are June, July and December (Average daylight: 0h and 0min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 0h and 12min).
Average sunshine days in September
Ust-Yansk, Russia
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is March (21.2 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in September
Ust-Yansk, Russia
- Average UV index in September: 1
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, February, March, April, September, November and December (UV index 1).
Average cloud cover in September
Ust-Yansk, Russia
- Average cloud cover in September: 61
The month with the most cloud cover is November (Cloud cover 77).
The month with the least cloud cover is June (Cloud cover 45).
Average visibility in September
Ust-Yansk, Russia
- Average visibility in September: 9km
The months with the highest visibility are June and July (10km).
The months with the lowest visibility are February, April and December (6km).
Ust-Yansk, Russia
Weather forecast for your location
2. Allow the app to use your location
