September weather forecast
Mobridge, SD

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Weather in September

September witnesses a gentle transition from high summer temperatures towards autumn coolness. While temperatures start to decline, they remain warm during the day, ranging from 74.5°F (23.6°C) to 54.5°F (12.5°C). Clear, crisp skies dominate most days as the cloudiness subsides. With the humidity maintaining at 53%, the decline in temperature comes with a certain freshness in the air, giving the city a vibrant vibe. The decrease in daylight hours to 12.5h and the onset of fall foliage signal the nearing of the colder, autumn season.

Temperature

The transition into September in Mobridge indicates a reduction in the average high-temperature, down to a still moderately hot 74.5°F (23.6°C) from August's warm 84.2°F (29°C). Mobridge's September nights cool down to an average low-temperature of 54.5°F (12.5°C).

Humidity

The average relative humidity in September is 53%.

Rainfall

In September, the rain falls for 7.1 days. Throughout September, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in Mobridge, South Dakota, there are 89.4 rainfall days, and 15.39" (391mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Mobridge.

Daylight

The average length of the day in September in Mobridge is 12h and 31min.
On the first day of the month, sunrise is at 7:04 am and sunset at 8:18 pm. On the last day of September, sunrise is at 7:39 am and sunset at 7:23 pm CDT.

Sunshine

In Mobridge, the average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, a regular UV index of 4 translates into these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Feb 14, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the average September temperature in Mobridge?

An average high-temperature, in September, in Mobridge, is 74.5°F (23.6°C) and the average low-temperature is 54.5°F (12.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in September in Mobridge?

The average relative humidity in September in Mobridge, South Dakota, is 53%.

How much does it rain in Mobridge in September?

In Mobridge, South Dakota, during September, the rain falls for 7.1 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow in Mobridge?

In Mobridge, snow does not fall in June through September.

Does it snow in Mobridge in September?

In Mobridge, South Dakota, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Mobridge?

In Mobridge, South Dakota, the average day length in September is 12h and 31min.

When is the sunrise / sunset in September in Mobridge?

In September, on the first day of the month, sunrise is at 7:04 am and sunset at 8:18 pm. On the last day of the month, in Mobridge, sunrise is at 7:39 am and sunset at 7:23 pm CDT.

How long on average sun shines in September in Mobridge?

In Mobridge, the average sunshine duration in September is 8.6h.

What is the UV index intensity in September in Mobridge?

In Mobridge, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Mobridge, SD

Average temperature in September - Mobridge, SD
  • Average high temperature in September: 74.5°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).

Average pressure in September
Mobridge, SD

Average pressure in September - Mobridge, SD
  • Average pressure in September: 29.94"Hg

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in September
Mobridge, SD

Average wind speed in September - Mobridge, SD
  • Average wind speed in September: 11.1mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).

Average humidity in September
Mobridge, SD

Average humidity in September - Mobridge, SD
  • Average humidity in September: 53%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).

Average rainfall in September
Mobridge, SD

Average rainfall in September - Mobridge, SD
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in September
Mobridge, SD

Average rainfall days in September - Mobridge, SD
  • Average rainfall days in September: 7.1 days

The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).

Average snowfall in September
Mobridge, SD

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

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Mobridge, SD

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

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Mobridge, SD
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in September
Mobridge, SD

Average sunshine days in September - Mobridge, SD
  • Average sunshine days in September: 19.6 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).

Average UV index in September
Mobridge, SD

Average UV index in September - Mobridge, SD
  • Average UV index in September: 4

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

Average cloud cover in September
Mobridge, SD

Average cloud cover in September - Mobridge, SD
  • Average cloud cover in September: 24

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).

Average visibility in September
Mobridge, SD

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

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Mobridge, South Dakota, USA

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