United StatesThe weather in May in Rainier
It's pleasantly warm in May in Rainier with an average temperature of 20°C. Temperatures this month range from a low of 18°C to a high of 23°C. At night, you can expect temperatures between 6°C and 11°C.
Looking for great weather? May is a good time to be in Rainier. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Rainier, Washington. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 32°C in 2023, Rainier reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 10°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 14°C.
Rainfall amount
In May, there is an average of 57 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Daily weather in May for Rainier
Click on any day in May to get detailed info about the usual weather on that day in Rainier. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Rainier | New York | |
|---|---|---|
| Average temperature | 20°C | 22°C |
| Max. temperature | 23°C | 28°C |
| Min. temperature | 6°C | -5°C |
| Total precipitation | 57 mm | 105 mm |
| Rainy days | 10 days | 14 days |
Start of May
The month of May starts in Rainier with mild temps, averaging around 20°C during the day and nights around 8°C.
Mid May
By mid-May, daytime temps stay steady at around 20°C, with nights around 9°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of May
By the end of May, the average daytime temperature in Rainier is around 22°C, while nighttime temps are about 10°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Rainier for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in May in Rainier, Washington. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Rainier
Temperature in May in Rainier over the years
Precipitation charts
These charts show the average amount of precipitation in May in Rainier, Washington. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Rainier
Total precipitation in May in Rainier over the years
Daily UV index in May in Rainier
This chart shows the average daily UV index in May in Rainier, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Rainier
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Average weather in Rainier by month
Click on a month below to see detailed weather info for Rainier. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.