September weather forecast
Hartman, CO

Weather in September

September, the first month of the autumn in Hartman, is also a moderately hot month, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 61.7°F (16.5°C).

Temperature

In September, the average high-temperature slightly decreases from a hot 89.8°F (32.1°C) in August to a warm 83.1°F (28.4°C). The average low-temperature, in Hartman, is 61.7°F (16.5°C).

Heat index

The average heat index in September is evaluated at 83.1°F (28.4°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, wind, clothing), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Hartman, the average relative humidity in September is 45%.

Rainfall

In September, in Hartman, the rain falls for 6.5 days. Throughout September, 0.51" (13mm) of precipitation is accumulated. In Hartman, during the entire year, the rain falls for 79.5 days and collects up to 8.9" (226mm) of precipitation.

Snowfall

In Hartman, snow does not fall in June through September.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 6:18 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:33 pm MDT.

Sunshine

The average sunshine in September in Hartman is 10.4h.

UV index

In Hartman, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
[Resources]

FAQ

What is the temperature in September in Hartman?

The average high-temperature, in September, in Hartman, Colorado, is 83.1°F (28.4°C), while the average low-temperature is 61.7°F (16.5°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in September is evaluated at 83.1°F (28.4°C).

What is the average humidity in September in Hartman?

In Hartman, the average relative humidity in September is 45%.

How much does it rain in Hartman in September?

In Hartman, Colorado, in September, during 6.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated.

When it does not snow in Hartman?

June through September are months without snowfall in Hartman.

Does it snow in Hartman in September?

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

How many hours of daylight does Hartman have in September?

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

When is the sunrise / sunset in September in Hartman?

On the first day of September, sunrise is at 6:18 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:33 pm MDT.

How many hours of sunshine does Hartman have in September?

The average sunshine duration in September in Hartman, Colorado, is 10.4h.

What is the UV index intensity in September in Hartman?

In September, the average daily maximum UV index in Hartman is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.

Average temperature in September
Hartman, CO

Average temperature in September - Hartman, CO
  • Average high temperature in September: 83.1°F

The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in September: 61.7°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is December (26.4°F).

[Resources]

Average pressure in September
Hartman, CO

Average pressure in September - Hartman, CO
  • Average pressure in September: 29.93"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).

[Resources]

Average wind speed in September
Hartman, CO

Average wind speed in September - Hartman, CO
  • Average wind speed in September: 10.9mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is January (8.9mph).

[Resources]

Average humidity in September
Hartman, CO

Average humidity in September - Hartman, CO
  • Average humidity in September: 45%

The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (40%).

[Resources]

Average rainfall in September
Hartman, CO

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

The wettest month (with the highest rainfall) is July (1.54").
The driest month (with the least rainfall) is November (0.28").

[Resources]

Average rainfall days in September
Hartman, CO

Average rainfall days in September - Hartman, CO
  • Average rainfall days in September: 6.5 days

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is November (2.5 days).

[Resources]

Average snowfall in September
Hartman, CO

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

The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in September
Hartman, CO

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

The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

Average daylight in September / Average sunshine in September - Hartman, CO
  • Average daylight in September: 12h and 25min

The month with the longest days is June (Average daylight: 14h and 46min).
The month with the shortest days is December (Average daylight: 9h and 34min).

  • Average sunshine in September: 10.4h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.6h).

[Resources]

Average sunshine days in September
Hartman, CO

Average sunshine days in September - Hartman, CO
  • Average sunshine days in September: 21.8 days

The month with the most sunshine days is November (25.2 days).
The month with the least sunshine days is July (17.3 days).

[Resources]

Average UV index in September
Hartman, CO

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).

[Resources]

Average cloud cover in September
Hartman, CO

Average cloud cover in September - Hartman, CO
  • Average cloud cover in September: 14

The months with the most cloud cover are February and April (Cloud cover 25).
The months with the least cloud cover are June and September (Cloud cover 14).

[Resources]

Average visibility in September
Hartman, CO

Average visibility in September - Hartman, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location