May weather forecast
South Colby, WA

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Weather in May

May, the last month of the spring in South Colby, is an enjoyable month, with an average temperature ranging between min 45°F (7.2°C) and max 65.1°F (18.4°C).

Temperature

With the onset of May, the average high-temperature subtly transitions from a mild 56.7°F (13.7°C) in April to an enjoyable 65.1°F (18.4°C). During May, South Colby sees a mean low-temperature of 45°F (7.2°C).

Humidity

In South Colby, the average relative humidity in May is 75%.

Rainfall

In South Colby, in May, during 11.8 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In South Colby, during the entire year, the rain falls for 138.9 days and collects up to 12.24" (311mm) of precipitation.

Snowfall

In South Colby, snow does not fall in April through October.

Daylight

The average length of the day in May is 15h and 9min.
On the first day of May in South Colby, sunrise is at 5:51 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:59 pm PDT.

Sunshine

In South Colby, the average sunshine in May is 9.2h.

UV index

The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 4 transforms into these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the temperature in May in South Colby?

The high-temperature in South Colby, Washington, during May is 65.1°F (18.4°C) and the low-temperature is 45°F (7.2°C).

What is the average humidity in May in South Colby?

The average relative humidity in May in South Colby, Washington, is 75%.

How much does it rain in South Colby in May?

In South Colby, in May, during 11.8 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

When it does not snow in South Colby?

In South Colby, Washington, snow does not fall in April through October.

How many hours of daylight does South Colby have in May?

The average day length in May in South Colby is 15h and 9min.

When are sunrise and sunset in May in South Colby?

In May, on the first day of the month, sunrise is at 5:51 am and sunset at 8:22 pm. On the last day of the month, in South Colby, sunrise is at 5:16 am and sunset at 8:59 pm PDT.

How many hours of sunshine does South Colby have in May?

The average sunshine duration in May in South Colby is 9.2h.

What is the UV index intensity in May in South Colby?

In South Colby, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from 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 May
South Colby, WA

Average temperature in May - South Colby, WA
  • Average high temperature in May: 65.1°F

The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (43.2°F).

  • Average low temperature in May: 45°F

The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).

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Average pressure in May
South Colby, WA

Average pressure in May - South Colby, WA
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in May
South Colby, WA

Average wind speed in May - South Colby, WA
  • Average wind speed in May: 4.2mph

The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).

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Average humidity in May
South Colby, WA

Average humidity in May - South Colby, WA
  • Average humidity in May: 75%

The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in May
South Colby, WA

Average rainfall in May - South Colby, WA
  • Average rainfall in May: 0.83"

The wettest months (with the highest rainfall) are January and December (2.05").
The driest month (with the least rainfall) is July (0.28").

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Average rainfall days in May
South Colby, WA

Average rainfall days in May - South Colby, WA
  • Average rainfall days in May: 11.8 days

The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (5.4 days).

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Average snowfall in May
South Colby, WA

Average snowfall in May - South Colby, WA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
South Colby, WA

Average snowfall days in May - South Colby, WA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
South Colby, WA

Average daylight in May / Average sunshine in May - South Colby, WA
  • Average daylight in May: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

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Average sunshine days in May
South Colby, WA

Average sunshine days in May - South Colby, WA
  • Average sunshine days in May: 16.4 days

The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (11.8 days).

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Average UV index in May
South Colby, WA

Average UV index in May - South Colby, WA
  • Average UV index in May: 4

The month with the highest UV index is July (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 May
South Colby, WA

Average cloud cover in May - South Colby, WA
  • Average cloud cover in May: 42

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in May
South Colby, WA

Average visibility in May - South Colby, WA
  • Average visibility in May: 6mi

The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).

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South Colby, Washington, USA

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