September weather forecast
Olivia, MN

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Weather in September

September, the first month of the autumn in Olivia, is also an agreeable month, with an average temperature fluctuating between 52.7°F (11.5°C) and 72.5°F (22.5°C).

Temperature

As September arrives, Olivia's weather displays a minor decrease in high-temperatures, transitioning from August's moderately hot 78.6°F (25.9°C) to an agreeable 72.5°F (22.5°C). In September, Olivia encounters an average low-temperature of 52.7°F (11.5°C) during the night.

Humidity

In September, the average relative humidity is 72%.

Rainfall

In Olivia, in September, it is raining for 10.5 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 116.8 rainfall days, and 21.65" (550mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Olivia, the average length of the day in September is 12h and 31min.
On the first day of September, sunrise is at 6:43 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:01 pm CDT.

Sunshine

In September, the average sunshine is 9h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 4 in September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Olivia?

In Olivia, 72.5°F (22.5°C) is the average high-temperature and 52.7°F (11.5°C) is the average low-temperature during September. In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is appraised at 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 72%.

How many days does it rain in September?

In September, the rain falls for 10.5 days. Throughout September, 1.57" (40mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Olivia, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Olivia have in September?

In Olivia, the average day length in September is 12h and 31min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:43 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:01 pm CDT.

How many hours of sunshine does Olivia have in September?

In September, the average sunshine duration is 9h.

How high is the UV index in September?

In Olivia, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Olivia, MN

Average temperature in September - Olivia, MN
  • Average high temperature in September: 72.5°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.8°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).

Average pressure in September
Olivia, MN

Average pressure in September - Olivia, MN
  • Average pressure in September: 29.99"Hg

The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Olivia, MN

Average wind speed in September - Olivia, MN
  • Average wind speed in September: 8.6mph

The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is August (7.2mph).

Average humidity in September
Olivia, MN

Average humidity in September - Olivia, MN
  • Average humidity in September: 72%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is May (67%).

Average rainfall in September
Olivia, MN

Average rainfall in September - Olivia, MN
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is June (3.43").
The driest months (with the least rainfall) are January and February (0.67").

Average rainfall days in September
Olivia, MN

Average rainfall days in September - Olivia, MN
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (2.5 days).

Average snowfall in September
Olivia, MN

Average snowfall in September - Olivia, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is December (4.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Olivia, MN

Average snowfall days in September - Olivia, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Olivia, MN

Average daylight in September / Average sunshine in September - Olivia, MN
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in September
Olivia, MN

Average sunshine days in September - Olivia, MN
  • Average sunshine days in September: 18.1 days

The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is June (11.3 days).

Average UV index in September
Olivia, MN

Average UV index in September - Olivia, MN
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in September
Olivia, MN

Average cloud cover in September - Olivia, MN
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in September
Olivia, MN

Average visibility in September - Olivia, MN
  • 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).

Olivia, Minnesota, USA

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