September weather forecast
Hesperus, CO

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Weather in September

September, the first month of the autumn in Hesperus, is still a refreshing month, with an average temperature fluctuating between 67.5°F (19.7°C) and 45.1°F (7.3°C).

Temperature

September's onset introduces a mild reduction in the average high-temperature, from a warm 73.9°F (23.3°C) in August to an enjoyable 67.5°F (19.7°C). In September, the nighttime temperature in Hesperus plummets remarkably from the daily apex to a steady average of 45.1°F (7.3°C).

Humidity

In September, the average relative humidity is 53%.

Rainfall

In Hesperus, in September, it is raining for 14.4 days, with typically 2.01" (51mm) of accumulated precipitation. In Hesperus, during the entire year, the rain falls for 113.4 days and collects up to 20.63" (524mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Hesperus, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:43 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:56 pm MDT.

Sunshine

In Hesperus, the average sunshine in September is 10.9h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 4 in September translates into these instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the average September temperature in Hesperus?

In Hesperus, in September, the average high-temperature is 67.5°F (19.7°C), and the average low-temperature is 45.1°F (7.3°C).

What is the average humidity in September in Hesperus?

In September, the average relative humidity in Hesperus is 53%.

How much does it rain in Hesperus in September?

In September, the rain falls for 14.4 days. Throughout September, 2.01" (51mm) of precipitation is accumulated.

When it does not snow in Hesperus?

June through September are months without snowfall.

Does it snow in Hesperus in September?

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

How many hours of daylight does Hesperus have in September?

In September, the average day length in Hesperus is 12h and 25min.

When is the sunrise / sunset in September in Hesperus?

On the first day of September in Hesperus, Colorado, sunrise is at 6:43 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:56 pm MDT.

How many hours of sunshine does Hesperus have in September?

In Hesperus, Colorado, the average sunshine duration in September is 10.9h.

How high is the UV index in September in Hesperus?

In Hesperus, Colorado, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
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
Hesperus, CO

Average temperature in September - Hesperus, CO
  • Average high temperature in September: 67.5°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in September: 45.1°F

The month with the highest average low temperature is July (51.6°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

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Average pressure in September
Hesperus, CO

Average pressure in September - Hesperus, CO
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.91"Hg).

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Average wind speed in September
Hesperus, CO

Average wind speed in September - Hesperus, CO
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is December (4.9mph).

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Average humidity in September
Hesperus, CO

Average humidity in September - Hesperus, CO
  • Average humidity in September: 53%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (37%).

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Average rainfall in September
Hesperus, CO

Average rainfall in September - Hesperus, CO
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is June (0.94").

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Average rainfall days in September
Hesperus, CO

Average rainfall days in September - Hesperus, CO
  • Average rainfall days in September: 14.4 days

The month with the highest number of rainy days is July (21.5 days).
The month with the least rainy days is November (3.4 days).

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Average snowfall in September
Hesperus, CO

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

The month with the highest snowfall is February (14.57").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Hesperus, CO

Average snowfall days in September - Hesperus, CO
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (12.8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Hesperus, CO
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).

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Average sunshine days in September
Hesperus, CO

Average sunshine days in September - Hesperus, CO
  • Average sunshine days in September: 11.9 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (6.9 days).

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Average UV index in September
Hesperus, CO

Average UV index in September - Hesperus, CO
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in September
Hesperus, CO

Average cloud cover in September - Hesperus, CO
  • Average cloud cover in September: 15

The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is June (Cloud cover 12).

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Average visibility in September
Hesperus, CO

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

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Hesperus, Colorado, USA

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