May weather forecast
Post Falls, ID

Corbin Park on the banks of the Spokane River flowing downstream in Post Falls, Idaho, USA
Corbin Park on the banks of the Spokane River flowing downstream in Post Falls, Idaho, USA

Weather in May

May, the last month of the spring in Post Falls, is an enjoyable month, with an average temperature varying between 64.8°F (18.2°C) and 39.6°F (4.2°C).

Temperature

In May, the average high-temperature rises from a cool 52.5°F (11.4°C) in April to an enjoyable 64.8°F (18.2°C). In Post Falls, Idaho, the average low-temperature is 39.6°F (4.2°C).

Humidity

The average relative humidity in May in Post Falls is 67%.

Rainfall

In Post Falls, Idaho, during May, the rain falls for 13.3 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Post Falls, during the entire year, the rain falls for 141.2 days and collects up to 22.6" (574mm) of precipitation.

Snowfall

Months with snowfall in Post Falls are January through May, September through December. May is the last month it regularly snows in Post Falls. During 0.4 snowfall days, in May, Post Falls aggregates 0.08" (2mm) of snow. Throughout the year, there are 71.8 snowfall days, and 56.54" (1436mm) of snow is accumulated.

Daylight

In May, the average length of the day is 15h and 10min.
On the first day of the month, sunrise is at 5:29 am and sunset at 8:00 pm. On the last day of May, in Post Falls, sunrise is at 4:53 am and sunset at 8:37 pm PDT.

Sunshine

The average sunshine in May in Post Falls, Idaho, is 9.8h.

UV index

The average daily maximum UV index in May in Post Falls is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 4 in May interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in May in Post Falls?

The average relative humidity in May in Post Falls is 67%.

How much does it rain in Post Falls in May?

In May, in Post Falls, the rain falls for 13.3 days. Throughout May, 1.77" (45mm) of precipitation is accumulated.

What is the last month it snows in Post Falls?

May is the last month it regularly snows. During 0.4 snowfall days, in May, Post Falls aggregates 0.08" (2mm) of snow.

What is the average length of the day in May in Post Falls?

In Post Falls, Idaho, the average day length in May is 15h and 10min.

When is the sunrise / sunset in May in Post Falls?

On the first day of May in Post Falls, Idaho, sunrise is at 5:29 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 4:53 am and sunset at 8:37 pm PDT.

How long on average sun shines in May in Post Falls?

The average sunshine duration in May in Post Falls, Idaho, is 9.8h.

What is the UV index reading in May in Post Falls?

In May, the average daily maximum UV index in Post Falls 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 days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Post Falls, ID

Average temperature in May - Post Falls, ID
  • Average high temperature in May: 64.8°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (31.3°F).

  • Average low temperature in May: 39.6°F

The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

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Average pressure in May
Post Falls, ID

Average pressure in May - Post Falls, ID
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in May
Post Falls, ID

Average wind speed in May - Post Falls, ID
  • Average wind speed in May: 4.6mph

The windiest month (with the highest average wind speed) is April (5mph).
The calmest month (with the lowest average wind speed) is December (3.9mph).

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Average humidity in May
Post Falls, ID

Average humidity in May - Post Falls, ID
  • Average humidity in May: 67%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (48%).

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Average rainfall in May
Post Falls, ID

Average rainfall in May - Post Falls, ID
  • Average rainfall in May: 1.77"

The wettest month (with the highest rainfall) is January (3.27").
The driest months (with the least rainfall) are July and August (0.43").

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Average rainfall days in May
Post Falls, ID

Average rainfall days in May - Post Falls, ID
  • Average rainfall days in May: 13.3 days

The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (5.6 days).

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Average snowfall in May
Post Falls, ID

Average snowfall in May - Post Falls, ID
  • Average snowfall in May: 0.08"

The month with the highest snowfall is January (16.57").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Post Falls, ID

Average snowfall days in May - Post Falls, ID
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in May /
Average sunshine in May
Post Falls, ID

Average daylight in May / Average sunshine in May - Post Falls, ID
  • Average daylight in May: 15h and 10min

The month with the longest days is June (Average daylight: 15h and 56min).
The month with the shortest days is December (Average daylight: 8h and 29min).

  • Average sunshine in May: 9h and 48min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

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Average sunshine days in May
Post Falls, ID

Average sunshine days in May - Post Falls, ID
  • Average sunshine days in May: 16.2 days

The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.6 days).

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Average UV index in May
Post Falls, ID

Average UV index in May - Post Falls, ID
  • 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 February, November and December (UV index 1).

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Average cloud cover in May
Post Falls, ID

Average cloud cover in May - Post Falls, ID
  • Average cloud cover in May: 35

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in May
Post Falls, ID

Average visibility in May - Post Falls, ID
  • Average visibility in May: 6mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).

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