September weather forecast
Fort Morgan, CO

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Weather in September

The first month of the autumn, September, is still a warm month in Fort Morgan, Colorado, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 56.3°F (13.5°C).

Temperature

The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a hot 86.7°F (30.4°C) in August to a warm 79.5°F (26.4°C). A noteworthy thermal contrast characterizes Fort Morgan's September nights, with temperatures averaging at a refreshing 56.3°F (13.5°C).

Humidity

August and September, with an average relative humidity of 45%, are the least humid months.

Rainfall

In Fort Morgan, in September, during 8.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Fort Morgan, during the entire year, the rain falls for 104 days and collects up to 12.09" (307mm) of precipitation.

Snowfall

In Fort Morgan, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 6:23 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:38 pm MDT.

Sunshine

In Fort Morgan, the average sunshine in September is 10.6h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: In September, the maximum UV index of 5 transforms into these recommendations:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Fort Morgan in September?

In Fort Morgan, in September, the average high-temperature is 79.5°F (26.4°C), and the average low-temperature is 56.3°F (13.5°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is appraised at 87.8°F (31°C).

What is the least humid month?

August and September, with an average relative humidity of 45%, are the least humid months.

What is the average humidity in September?

In September, the average relative humidity is 45%.

How many days does it rain in September?

In Fort Morgan, in September, during 8.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

When it does not snow?

In Fort Morgan, snow does not fall in June through September.

Does it snow in September?

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

How many hours of daylight does Fort Morgan have in September?

The average day length in September in Fort Morgan is 12h and 26min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:23 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:38 pm MDT.

How many hours of sunshine does Fort Morgan have in September?

In Fort Morgan, the average sunshine duration in September is 10.6h.

How high is the UV index in September in Fort Morgan?

The average daily maximum UV index in September in Fort Morgan is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's 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
Fort Morgan, CO

Average temperature in September - Fort Morgan, CO
  • Average high temperature in September: 79.5°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (38.7°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is December (22.5°F).

Average pressure in September
Fort Morgan, CO

Average pressure in September - Fort Morgan, CO
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in September
Fort Morgan, CO

Average wind speed in September - Fort Morgan, CO
  • Average wind speed in September: 8.5mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is December (7.8mph).

Average humidity in September
Fort Morgan, CO

Average humidity in September - Fort Morgan, CO
  • Average humidity in September: 45%

The month with the highest relative humidity is January (64%).
The months with the lowest relative humidity are August and September (45%).

Average rainfall in September
Fort Morgan, CO

Average rainfall in September - Fort Morgan, CO
  • Average rainfall in September: 0.71"

The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are January and December (0.39").

Average rainfall days in September
Fort Morgan, CO

Average rainfall days in September - Fort Morgan, CO
  • Average rainfall days in September: 8.5 days

The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (2.9 days).

Average snowfall in September
Fort Morgan, CO

Average snowfall in September - Fort Morgan, CO
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.64").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Fort Morgan, CO

Average snowfall days in September - Fort Morgan, CO
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Fort Morgan, CO

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 10h and 4min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).

Average sunshine days in September
Fort Morgan, CO

Average sunshine days in September - Fort Morgan, CO
  • Average sunshine days in September: 18.6 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in September
Fort Morgan, CO

Average UV index in September - Fort Morgan, CO
  • Average UV index in September: 5

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

Average cloud cover in September
Fort Morgan, CO

Average cloud cover in September - Fort Morgan, CO
  • Average cloud cover in September: 17

The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in September
Fort Morgan, CO

Average visibility in September - Fort Morgan, CO
  • Average visibility in September: 6mi

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

Fort Morgan, Colorado, USA

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