September weather forecast
North Omak, WA

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Weather in September

The first month of the autumn, September, is still a pleasant month in North Omak, Washington, with an average temperature ranging between min 47.3°F (8.5°C) and max 70.9°F (21.6°C).

Temperature

September brings a drop in North Omak's average high-temperature, falling from a warm 82.4°F (28°C) in August to an agreeable 70.9°F (21.6°C). North Omak experiences a drastic reduction from day temperatures to an average low of 47.3°F (8.5°C) in September.

Humidity

The average relative humidity in September is 52%.

Rainfall

In September, the rain falls for 5.3 days. Throughout September, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 90.2 rainfall days, and 7.56" (192mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 34min.
On the first day of September, sunrise is at 6:16 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:38 pm PDT.

Sunshine

The average sunshine in September is 10.8h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high UV index of 4 in September translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

In September, the average high-temperature and low-temperature are 70.9°F (21.6°C) and 47.3°F (8.5°C) respectively. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in August is calculated to be 82.4°F (28°C).

What is the average humidity in September?

In North Omak, the average relative humidity in September is 52%.

How many days does it rain in September?

In September, the rain falls for 5.3 days. Throughout September, 0.51" (13mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in September?

In September, the average day length is 12h and 34min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:16 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:38 pm PDT.

How many hours of sunshine does North Omak have in September?

In North Omak, the average sunshine duration in September is 10.8h.

How high is the UV index in September?

The average daily maximum UV index in September in North Omak is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
North Omak, WA

Average temperature in September - North Omak, WA
  • Average high temperature in September: 70.9°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (30.4°F).

  • Average low temperature in September: 47.3°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).

Average pressure in September
North Omak, WA

Average pressure in September - North Omak, WA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).

Average wind speed in September
North Omak, WA

Average wind speed in September - North Omak, WA
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is April (5.1mph).
The calmest month (with the lowest average wind speed) is January (4mph).

Average humidity in September
North Omak, WA

Average humidity in September - North Omak, WA
  • Average humidity in September: 52%

The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are July and August (42%).

Average rainfall in September
North Omak, WA

Average rainfall in September - North Omak, WA
  • Average rainfall in September: 0.51"

The wettest month (with the highest rainfall) is December (0.94").
The driest months (with the least rainfall) are July and August (0.2").

Average rainfall days in September
North Omak, WA

Average rainfall days in September - North Omak, WA
  • Average rainfall days in September: 5.3 days

The month with the highest number of rainy days is March (11.5 days).
The month with the least rainy days is August (2.8 days).

Average snowfall in September
North Omak, WA

Average snowfall in September - North Omak, WA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.39").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
North Omak, WA

Average snowfall days in September - North Omak, WA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (8.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
North Omak, WA

Average daylight in September / Average sunshine in September - North Omak, WA
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in September: 10h and 5min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in September
North Omak, WA

Average sunshine days in September - North Omak, WA
  • Average sunshine days in September: 23.4 days

The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is November (15.4 days).

Average UV index in September
North Omak, WA

Average UV index in September - North Omak, WA
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).

Average cloud cover in September
North Omak, WA

Average cloud cover in September - North Omak, WA
  • Average cloud cover in September: 18

The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in September
North Omak, WA

Average visibility in September - North Omak, WA
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

North Omak, Washington, USA

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