September weather forecast
Spring Valley, NV

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Weather in September

September bids summer goodbye and ushers in Autumn with gradually receding temperatures in Spring Valley. Mentioning the slight dip in the mercury, as the temperatures somewhat drop to an average of 71.2°F (21.8°C) to 88.9°F (31.6°C). As rainfall becomes a less frequent companion, residents enjoy an expanse of clear blue skies. The days shorten slightly, signalling the earth's preparation for autumn. September's evening breeze brings a welcome respite from the relentless summer heat.

Temperature

As September begins, there is a minor decrease in the average high-temperature, softly falling from a fiery hot 97.3°F (36.3°C) in August to a hot 88.9°F (31.6°C). Nighttime temperature lowers to an average of 71.2°F (21.8°C) in September.

Humidity

The average relative humidity in September in Spring Valley, Nevada, is 23%.

Rainfall

In Spring Valley, Nevada, during September, the rain falls for 4 days and regularly aggregates up to 0.28" (7mm) of precipitation. Throughout the year, in Spring Valley, there are 42.9 rainfall days, and 3.23" (82mm) of precipitation is accumulated.

Snowfall

In Spring Valley, snow does not fall in January, March through December.

Daylight

In Spring Valley, the average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 6:13 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:25 pm PDT.

Sunshine

In Spring Valley, the average sunshine in September is 10.3h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 6 transforms into these recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

How hot does it get in Spring Valley in September?

The average high-temperature, in September, in Spring Valley, is 88.9°F (31.6°C), while the average low-temperature is 71.2°F (21.8°C).

What is the average humidity in September in Spring Valley?

In Spring Valley, Nevada, the average relative humidity in September is 23%.

How much does it rain in Spring Valley in September?

In Spring Valley, Nevada, in September, it is raining for 4 days, with typically 0.28" (7mm) of accumulated precipitation.

When it does not snow in Spring Valley?

In Spring Valley, snow does not fall in January, March through December.

How many hours of daylight does Spring Valley have in September?

In Spring Valley, Nevada, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September in Spring Valley?

In September, on the first day of the month, sunrise is at 6:13 am and sunset at 7:08 pm. On the last day of the month, in Spring Valley, Nevada, sunrise is at 6:35 am and sunset at 6:25 pm PDT.

How many hours of sunshine does Spring Valley have in September?

The average sunshine duration in September is 10.3h.

How high is the UV index in September in Spring Valley?

In September, the average daily maximum UV index in Spring Valley is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to 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
Spring Valley, NV

Average temperature in September - Spring Valley, NV
  • Average high temperature in September: 88.9°F

The warmest month (with the highest average high temperature) is July (98.4°F).
The month with the lowest average high temperature is December (50.9°F).

  • Average low temperature in September: 71.2°F

The months with the highest average low temperature are July and August (78.4°F).
The coldest month (with the lowest average low temperature) is December (38.8°F).

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Average pressure in September
Spring Valley, NV

Average pressure in September - Spring Valley, NV
  • Average pressure in September: 29.85"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.76"Hg).

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Average wind speed in September
Spring Valley, NV

Average wind speed in September - Spring Valley, NV
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is January (5.4mph).

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Average humidity in September
Spring Valley, NV

Average humidity in September - Spring Valley, NV
  • Average humidity in September: 23%

The month with the highest relative humidity is January (47%).
The month with the lowest relative humidity is June (15%).

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Average rainfall in September
Spring Valley, NV

Average rainfall in September - Spring Valley, NV
  • Average rainfall in September: 0.28"

The wettest months (with the highest rainfall) are July and August (0.55").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in September
Spring Valley, NV

Average rainfall days in September - Spring Valley, NV
  • Average rainfall days in September: 4 days

The month with the highest number of rainy days is July (6.1 days).
The month with the least rainy days is June (0.9 days).

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Average snowfall in September
Spring Valley, NV

Average snowfall in September - Spring Valley, NV
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.24").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Spring Valley, NV

Average snowfall days in September - Spring Valley, NV
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in September /
Average sunshine in September
Spring Valley, NV

Average daylight in September / Average sunshine in September - Spring Valley, NV
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 10h and 2min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in September
Spring Valley, NV

Average sunshine days in September - Spring Valley, NV
  • Average sunshine days in September: 22.7 days

The month with the most sunshine days is June (27.6 days).
The month with the least sunshine days is July (18.7 days).

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Average UV index in September
Spring Valley, NV

Average UV index in September - Spring Valley, NV
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Spring Valley, NV

Average cloud cover in September - Spring Valley, NV
  • Average cloud cover in September: 7

The months with the most cloud cover are January and December (Cloud cover 19).
The months with the least cloud cover are June and August (Cloud cover 6).

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Average visibility in September
Spring Valley, NV

Average visibility in September - Spring Valley, NV
  • 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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Spring Valley, Nevada, USA

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