September weather forecast
Whitewater, CO

Weather in September

September, the first month of the autumn, in Whitewater, is also a moderately hot month, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 76.5°F (24.7°C).

Temperature

In Whitewater, the average high-temperature marginally drops, from a moderately hot 84.2°F (29°C) in August, to a still warm 76.5°F (24.7°C). In September, in Whitewater, the average low-temperature is 53.1°F (11.7°C).

Humidity

In September, the average relative humidity in Whitewater is 39%.

Rainfall

In Whitewater, it is raining for 7.3 days, with typically 0.63" (16mm) of accumulated precipitation. Throughout the year, there are 93.6 rainfall days, and 8.46" (215mm) of precipitation is accumulated.

Snowfall

In Whitewater snow does not fall in May through September.

Daylight

In Whitewater, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine in Whitewater is 11h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in Whitewater?

In September, the average relative humidity in Whitewater is 39%.

How much does it rain in Whitewater in September?

In Whitewater, Colorado, during September, the rain falls for 7.3 days and regularly aggregates up to 0.63" (16mm) of precipitation.

When it does not snow in Whitewater?

May through September are months without snowfall.

Does it snow in Whitewater in September?

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

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

In September, the average length of the day is 12.4h.

How long on average sun shines in September in Whitewater?

In September, the average sunshine in Whitewater is 11h.

What is the UV index intensity in September in Whitewater?

In Whitewater, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Whitewater, CO

Average temperature in September - Whitewater, CO
  • Average high temperature in September: 76.5°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in September: 53.1°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in September
Whitewater, CO

Average pressure in September - Whitewater, CO
  • Average pressure in September: 30"

The month with the highest atmospheric pressure is January (30.27").
Months with the lowest atmospheric pressure are May and June (29.9").

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Average wind speed in September
Whitewater, CO

Average wind speed in September - Whitewater, CO
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is June (7.5mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).

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Average humidity in September
Whitewater, CO

Average humidity in September - Whitewater, CO
  • Average humidity in September: 39%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (29%).

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Average rainfall in September
Whitewater, CO

Average rainfall in September - Whitewater, CO
  • Average rainfall in September: 0.63"

The wettest month (with the highest rainfall) is March (1.06").
The driest month (with the least rainfall) is June (0.51").

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Average rainfall days in September
Whitewater, CO

Average rainfall days in September - Whitewater, CO
  • Average rainfall days in September: 7.3 days

The month with the highest number of rainy days is March (10.4 days).
The month with the least rainy days is November (5.5 days).

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Average snowfall in September
Whitewater, CO

Average snowfall in September - Whitewater, CO
  • Average snowfall in September: 0"

The month with the highest snowfall is December (3.74").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Whitewater, CO

Average snowfall days in September - Whitewater, CO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (7.9 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Whitewater, CO

Average daylight in September / Average sunshine in September - Whitewater, CO
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 11h

The month with the most sunshine is June (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 6.3h).

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Average sunshine days in September
Whitewater, CO

Average sunshine days in September - Whitewater, CO
  • Average sunshine days in September: 19.3 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is February (15.8 days).

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Average UV index in September
Whitewater, CO

Average UV index in September - Whitewater, CO
  • Average UV index in September: 5

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

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Average cloud cover in September
Whitewater, CO

Average cloud cover in September - Whitewater, CO
  • Average cloud cover in September: 11

The month with the most cloud cover is January (Cloud cover 31).
Months with the least cloud cover are June and September (Cloud cover 11).

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Average visibility in September
Whitewater, CO

Average visibility in September - Whitewater, CO
  • Average visibility in September: 6mi

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).

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