September weather forecast
Grover, CO

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Grover, Colorado, with an average temperature ranging between max 79.3°F (26.3°C) and min 53.2°F (11.8°C).

Temperature

With the commencement of September, Grover records a moderate temperature decline, with the average high easing from August's tropical 87.1°F (30.6°C) to a moderately hot 79.3°F (26.3°C). Despite the intense daytime heat, Grover sustains a steady low-temperature average of 53.2°F (11.8°C) during September.

Humidity

August and September, with an average relative humidity of 44%, are the least humid months in Grover.

Rainfall

In Grover, in September, during 9.5 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. In Grover, during the entire year, the rain falls for 108.3 days and collects up to 12.32" (313mm) of precipitation.

Snowfall

June through September are months without snowfall in Grover.

Daylight

In September, the average length of the day in Grover is 12h and 27min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:28 pm. On the last day of September, in Grover, Colorado, sunrise is at 6:53 am and sunset at 6:39 pm MDT.

Sunshine

In September, the average sunshine is 10.7h.

UV index

In Grover, Colorado, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the temperature in September in Grover?

The average high-temperature and low-temperature in Grover during September are 79.3°F (26.3°C) and 53.2°F (11.8°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 87.8°F (31°C).

What is the least humid month in Grover?

August and September, with an average relative humidity of 44%, are the least humid months in Grover.

What is the average humidity in September in Grover?

In September, the average relative humidity in Grover, Colorado, is 44%.

How many days does it rain in September in Grover?

In Grover, Colorado, during September, the rain falls for 9.5 days and regularly aggregates up to 0.91" (23mm) of precipitation.

When it does not snow in Grover?

June through September are months without snowfall in Grover.

Does it snow in Grover in September?

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

How many hours of daylight does Grover have in September?

The average day length in September in Grover, Colorado, is 12h and 27min.

When are sunrise and sunset in September in Grover?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:28 pm. On the last day of the month, in Grover, Colorado, sunrise is at 6:53 am and sunset at 6:39 pm MDT.

How many hours of sunshine does Grover have in September?

In Grover, Colorado, the average sunshine duration in September is 10.7h.

How high is the UV index in September in Grover?

In Grover, Colorado, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Grover, CO

Average temperature in September - Grover, CO
  • Average high temperature in September: 79.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (38.3°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).

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Average pressure in September
Grover, CO

Average pressure in September - Grover, CO
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in September
Grover, CO

Average wind speed in September - Grover, CO
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in September
Grover, CO

Average humidity in September - Grover, CO
  • Average humidity in September: 44%

The month with the highest relative humidity is December (64%).
The months with the lowest relative humidity are August and September (44%).

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Average rainfall in September
Grover, CO

Average rainfall in September - Grover, CO
  • Average rainfall in September: 0.91"

The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January and December (0.31").

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Average rainfall days in September
Grover, CO

Average rainfall days in September - Grover, CO
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (2.9 days).

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Average snowfall in September
Grover, CO

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

The month with the highest snowfall is April (3.23").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Grover, CO

Average snowfall days in September - Grover, CO
  • Average snowfall days in September: 0.1 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).

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

Average daylight in September / Average sunshine in September - Grover, CO
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 10h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

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Average sunshine days in September
Grover, CO

Average sunshine days in September - Grover, CO
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is May (10.9 days).

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Average UV index in September
Grover, CO

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

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).

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Average cloud cover in September
Grover, CO

Average cloud cover in September - Grover, CO
  • Average cloud cover in September: 18

The months with the most cloud cover are February and April (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 17).

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Average visibility in September
Grover, CO

Average visibility in September - Grover, 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).

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Grover, Colorado, USA

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