The highest day temperature in May 2025 was 84°F. The lowest night temperature was 42°F. The average values for day and night temperatures during May were 63.8°F и 52.0°F respectivly.

Most of the days in May are gloomy but you can also expect sunny days.

Precipitation total in May for Olympia is 0.9 in.

The average wind speed in May is 4.8 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Olympia in May is 6.7 hours.