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
September
Weather in September
Temperature
September's arrival comes with a decrease in the average high-temperature, moving from a warm 23.2°C (73.8°F) in August to a refreshing 18.1°C (64.6°F). During September, Stare Gronowo consistently records a temperature low averaging a cool 10°C (50°F).Humidity
In September, the average relative humidity is 75%.Rainfall
In Stare Gronowo, in September, it is raining for 9.7 days, with typically 22mm (0.87") of accumulated precipitation. In Stare Gronowo, during the entire year, the rain falls for 129.1 days and collects up to 321mm (12.64") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Stare Gronowo, the average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 06:00 and sunset at 19:40. On the last day of the month, sunrise is at 06:51 and sunset at 18:29 CEST.
Sunshine
In Stare Gronowo, the average sunshine in September is 8.2h.UV index
In Stare Gronowo, 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 ordinary person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Stare Gronowo in September?
What is the average humidity in September in Stare Gronowo?
How many days does it rain in September in Stare Gronowo?
When it does not snow in Stare Gronowo?
Does it snow in Stare Gronowo in September?
How many hours of daylight does Stare Gronowo have in September?
When are sunrise and sunset in September in Stare Gronowo?
How many hours of sunshine does Stare Gronowo have in September?
How high is the UV index in September in Stare Gronowo?
Average temperature in September
Stare Gronowo, Poland
- Average high temperature in September: 18.1°C
The warmest month (with the highest average high temperature) is August (23.2°C).
The month with the lowest average high temperature is January (-0.2°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-3.5°C).
Average pressure in September
Stare Gronowo, Poland
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is October (1016.9mbar).
The month with the lowest atmospheric pressure is July (1013.5mbar).
Average wind speed in September
Stare Gronowo, Poland
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is December (16.6km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity in September
Stare Gronowo, Poland
- Average humidity in September: 75%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is April (69%).
Average rainfall in September
Stare Gronowo, Poland
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Stare Gronowo, Poland
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Stare Gronowo, Poland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (76mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Stare Gronowo, Poland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stare Gronowo, Poland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Stare Gronowo, Poland
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is September (19.2 days).
The month with the least sunshine days is February (12 days).
Average UV index in September
Stare Gronowo, Poland
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in September
Stare Gronowo, Poland
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Stare Gronowo, Poland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and December (8km).
