September weather forecast
Jewell, IA

Weather in September

September, the first month of the autumn, in Jewell, is still a warm month, with average temperature fluctuating between 74.3°F (23.5°C) and 55.4°F (13°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a still moderately hot 74.3°F (23.5°C). The average low-temperature,, is 55.4°F (13°C).

Humidity

In September, the average relative humidity in Jewell is 76%.

Rainfall

In Jewell, it is raining for 12.4 days, with typically 2.99" (76mm) of accumulated precipitation. In Jewell, during the entire year, the rain falls for 143.3 days and collects up to 29.25" (743mm) of precipitation.

Snowfall

In Jewell, Iowa, snow does not fall in June through September.

Daylight

In Jewell, the average length of the day in September is 12.5h.

Sunshine

The average sunshine in September is 9.3h.

UV index

In Jewell, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in Jewell?

The average relative humidity in September is 76%.

How much does it rain in Jewell in September?

In Jewell, during September, the rain falls for 12.4 days and regularly aggregates up to 2.99" (76mm) of precipitation.

When it does not snow in Jewell?

In Jewell, Iowa, snow does not fall in June through September.

Does it snow in Jewell in September?

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

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

In September, the average length of the day in Jewell, Iowa, is 12.5h.

How long on average sun shines in September in Jewell?

The average sunshine in September in Jewell, Iowa, is 9.3h.

What is the UV index intensity in September in Jewell?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Jewell, IA

Average temperature in September - Jewell, IA
  • Average high temperature in September: 74.3°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in September: 55.4°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

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Average pressure in September
Jewell, IA

Average pressure in September - Jewell, IA
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in September
Jewell, IA

Average wind speed in September - Jewell, IA
  • Average wind speed in September: 8.3mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in September
Jewell, IA

Average humidity in September - Jewell, IA
  • Average humidity in September: 76%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Jewell, IA

Average rainfall in September - Jewell, IA
  • Average rainfall in September: 2.99"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (0.98").

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Average rainfall days in September
Jewell, IA

Average rainfall days in September - Jewell, IA
  • Average rainfall days in September: 12.4 days

Months with the highest number of rainy days are May and June (19.2 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in September
Jewell, IA

Average snowfall in September - Jewell, IA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.45").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Jewell, IA

Average snowfall days in September - Jewell, IA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Jewell, IA

Average daylight in September / Average sunshine in September - Jewell, IA
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 9.3h

The month with the most sunshine is July (Average sunshine: 10.1h).
The month with the least sunshine is January (Average sunshine: 3.9h).

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Average sunshine days in September
Jewell, IA

Average sunshine days in September - Jewell, IA
  • Average sunshine days in September: 15.4 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (8.5 days).

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Average UV index in September
Jewell, IA

Average UV index in September - Jewell, IA
  • Average UV index in September: 4

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

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Average cloud cover in September
Jewell, IA

Average cloud cover in September - Jewell, IA
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in September
Jewell, IA

Average visibility in September - Jewell, IA
  • Average visibility in September: 6mi

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

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