September weather forecast
Sanford, CO

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Weather in September

September, the first month of the autumn in Sanford, is still a pleasant month, with an average temperature varying between 45.5°F (7.5°C) and 72.3°F (22.4°C).

Temperature

With the onset of September, Sanford's average high-temperature slightly adjusts, moderately receding from August's moderately hot 78.6°F (25.9°C) to a pleasant 72.3°F (22.4°C). Sanford's nights during September are marked by a pronounced drop from daytime temperatures, experiencing an average low of 45.5°F (7.5°C).

Humidity

In September, the average relative humidity is 49%.

Rainfall

In September, in Sanford, Colorado, the rain falls for 6.9 days. Throughout September, 0.51" (13mm) of precipitation is accumulated. In Sanford, Colorado, during the entire year, the rain falls for 79.9 days and collects up to 7.13" (181mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. In Sanford, during the entire year, snow falls for 44.9 days and aggregates up to 22.6" (574mm) of snow.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:34 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:47 pm MDT.

Sunshine

In Sanford, the average sunshine in September is 11.3h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: An average UV index of 4 in September transforms into this advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.

Frequently asked questions

What is the temperature in September?

In September, the average high-temperature and low-temperature are 72.3°F (22.4°C) and 45.5°F (7.5°C) respectively. In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 82.4°F (28°C).

What is the average humidity in September?

The average relative humidity in September is 49%.

How much does it rain in September?

In Sanford, in September, it is raining for 6.9 days, with typically 0.51" (13mm) of accumulated precipitation.

When does it start snowing?

September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Sanford have in September?

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:34 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:47 pm MDT.

How long on average sun shines in September?

In September, the average sunshine duration is 11.3h.

What is the UV index reading in September?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sanford, CO

Average temperature in September - Sanford, CO
  • Average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in September: 45.5°F

The month with the highest average low temperature is July (50.5°F).
The coldest month (with the lowest average low temperature) is January (12°F).

Average pressure in September
Sanford, CO

Average pressure in September - Sanford, CO
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).

Average wind speed in September
Sanford, CO

Average wind speed in September - Sanford, CO
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in September
Sanford, CO

Average humidity in September - Sanford, CO
  • Average humidity in September: 49%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is June (37%).

Average rainfall in September
Sanford, CO

Average rainfall in September - Sanford, CO
  • Average rainfall in September: 0.51"

The wettest month (with the highest rainfall) is May (1.02").
The driest months (with the least rainfall) are November and December (0.39").

Average rainfall days in September
Sanford, CO

Average rainfall days in September - Sanford, CO
  • Average rainfall days in September: 6.9 days

The month with the highest number of rainy days is July (10.1 days).
The month with the least rainy days is November (3 days).

Average snowfall in September
Sanford, CO

Average snowfall in September - Sanford, CO
  • Average snowfall in September: 0.04"

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

Average snowfall days in September
Sanford, CO

Average snowfall days in September - Sanford, CO
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Sanford, 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: 11h and 2min

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 48min).

Average sunshine days in September
Sanford, CO

Average sunshine days in September - Sanford, CO
  • Average sunshine days in September: 18.4 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is April (16.9 days).

Average UV index in September
Sanford, CO

Average UV index in September - Sanford, 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, October, November and December (UV index 2).

Average cloud cover in September
Sanford, CO

Average cloud cover in September - Sanford, CO
  • Average cloud cover in September: 12

The month with the most cloud cover is January (Cloud cover 25).
The months with the least cloud cover are June, September, October and November (Cloud cover 12).

Average visibility in September
Sanford, CO

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

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

Sanford, Colorado, USA

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