May weather forecast
Westfall, OR

Share

Weather in May

May, the last month of the spring in Westfall, is a pleasant month, with an average temperature varying between 47.1°F (8.4°C) and 70°F (21.1°C).

Temperature

Noticing a change, the average high-temperature during May moves from April's moderate 59.5°F (15.3°C) to a pleasant 70°F (21.1°C). Westfall registers a marked temperature plunge to a frosty 47.1°F (8.4°C) during the cool May nights.

Humidity

The average relative humidity in May is 46%.

Rainfall

The months with the most rainfall are March and May, with an average 0.39" (10mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In May, the average length of the day is 14h and 47min.
On the first day of May, sunrise is at 6:41 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 9:26 pm MDT.

Sunshine

In Westfall, the average sunshine in May is 11.3h.

UV index

In Westfall, Oregon, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: In May, a regular UV index of 5 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in May?

The high-temperature, in May, in Westfall, records 70°F (21.1°C), while the low-temperature is 47.1°F (8.4°C).

What is the average humidity in May?

The average relative humidity in May is 46%.

What is the rainiest month?

The wettest months are March and May, with an average 0.39" (10mm) of rainfall.

How much does it rain in Westfall in May?

In Westfall, during May, the rain falls for 5.4 days and regularly aggregates up to 0.39" (10mm) of precipitation.

When it does not snow?

In Westfall, snow does not fall in May through October.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Westfall have in May?

The average day length in May is 14h and 47min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:41 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 9:26 pm MDT.

How long on average sun shines in May?

In Westfall, the average sunshine duration in May is 11.3h.

How high is the UV index in May?

The average daily maximum UV index in May is 5. A UV Index 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 May
Westfall, OR

Average temperature in May - Westfall, OR
  • Average high temperature in May: 70°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is December (34.3°F).

  • Average low temperature in May: 47.1°F

The month with the highest average low temperature is August (63.5°F).
The coldest months (with the lowest average low temperature) are January and December (22.1°F).

Average pressure in May
Westfall, OR

Average pressure in May - Westfall, OR
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

Average wind speed in May
Westfall, OR

Average wind speed in May - Westfall, OR
  • Average wind speed in May: 6.9mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is January (3.9mph).

Average humidity in May
Westfall, OR

Average humidity in May - Westfall, OR
  • Average humidity in May: 46%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (28%).

Average rainfall in May
Westfall, OR

Average rainfall in May - Westfall, OR
  • Average rainfall in May: 0.39"

The wettest months (with the highest rainfall) are March and May (0.39").
The driest months (with the least rainfall) are July and August (0.08").

Average rainfall days in May
Westfall, OR

Average rainfall days in May - Westfall, OR
  • Average rainfall days in May: 5.4 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (2.3 days).

Average snowfall in May
Westfall, OR

Average snowfall in May - Westfall, OR
  • Average snowfall in May: 0"

The month with the highest snowfall is December (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Westfall, OR

Average snowfall days in May - Westfall, OR
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is December (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Westfall, OR

Average daylight in May / Average sunshine in May - Westfall, OR
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 11h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in May
Westfall, OR

Average sunshine days in May - Westfall, OR
  • Average sunshine days in May: 23.8 days

The month with the most sunshine days is July (26.8 days).
The month with the least sunshine days is March (20.1 days).

Average UV index in May
Westfall, OR

Average UV index in May - Westfall, OR
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in May
Westfall, OR

Average cloud cover in May - Westfall, OR
  • Average cloud cover in May: 24

The months with the most cloud cover are January and December (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 8).

Average visibility in May
Westfall, OR

Average visibility in May - Westfall, OR
  • Average visibility in May: 6mi

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

Westfall, Oregon, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location