September weather forecast
Menno, SD

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Weather in September

September is a time of change in Menno, bringing the first signs of autumn and a shift away from summer's swelter. There's an unmistakable autumn nip in the air, with a notable decrease in average temperatures. Rainfall reduces to average values of 1.5" (38mm), while sunlight diminishes in synchrony with the decline in temperature. The wind starts picking up speed again, as nature in Menno begins preparation for the colder months ahead. September subtly hints at the approaching winter, while basking in the last waves of summer warmth.

Temperature

September ushers in a minute temperature change, with average high-temperatures reducing from August's 84.4°F (29.1°C) to a still moderately hot 76.3°F (24.6°C). Nighttime temperatures consistently average a fresh 55.2°F (12.9°C) during September.

Humidity

In Menno, the average relative humidity in September is 64%.

Rainfall

In Menno, in September, during 11.7 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, in Menno, there are 106.8 rainfall days, and 19.29" (490mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Menno.

Daylight

In Menno, South Dakota, the average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:55 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:12 pm CDT.

Sunshine

The average sunshine in September in Menno is 8.8h.

UV index

The average daily maximum UV index in September in Menno is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Feb 14, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the usual temperature for Menno in September?

The high-temperature, in September, in Menno, records 76.3°F (24.6°C), while the low-temperature is 55.2°F (12.9°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is calculated to be 89.6°F (32°C).

What is the average humidity in September in Menno?

The average relative humidity in September in Menno is 64%.

How many days does it rain in September in Menno?

In Menno, South Dakota, during September, the rain falls for 11.7 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When it does not snow in Menno?

In Menno, South Dakota, snow does not fall in May through September.

Does it snow in Menno in September?

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

How many hours of daylight does Menno have in September?

In Menno, South Dakota, the average day length in September is 12h and 29min.

What time are sunrise and sunset in September in Menno?

In September, on the first day of the month, sunrise is at 6:55 am and sunset at 8:04 pm. On the last day of the month, in Menno, South Dakota, sunrise is at 7:27 am and sunset at 7:12 pm CDT.

How many hours of sunshine does Menno have in September?

The average sunshine duration in September in Menno, South Dakota, is 8.8h.

What is the UV index intensity in September in Menno?

In Menno, South Dakota, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to 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
Menno, SD

Average temperature in September - Menno, SD
  • Average high temperature in September: 76.3°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in September: 55.2°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

Average pressure in September
Menno, SD

Average pressure in September - Menno, SD
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in September
Menno, SD

Average wind speed in September - Menno, SD
  • Average wind speed in September: 9.6mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

Average humidity in September
Menno, SD

Average humidity in September - Menno, SD
  • Average humidity in September: 64%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (63%).

Average rainfall in September
Menno, SD

Average rainfall in September - Menno, SD
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is February (0.51").

Average rainfall days in September
Menno, SD

Average rainfall days in September - Menno, SD
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is January (2.5 days).

Average snowfall in September
Menno, SD

Average snowfall in September - Menno, SD
  • Average snowfall in September: 0"

The month with the highest snowfall is December (2.56").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Menno, SD

Average snowfall days in September - Menno, SD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Menno, SD

Average daylight in September / Average sunshine in September - Menno, SD
  • 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 0min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in September
Menno, SD

Average sunshine days in September - Menno, SD
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in September
Menno, SD

Average UV index in September - Menno, SD
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Menno, SD

Average cloud cover in September - Menno, SD
  • Average cloud cover in September: 26

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 23).

Average visibility in September
Menno, SD

Average visibility in September - Menno, SD
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Menno, South Dakota, USA

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