Public Information Statement
Issued by NWS Medford, OR

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NOUS46 KMFR 011253

Public Information Statement
National Weather Service Medford OR
553 AM PDT Mon Jun 1 2020


May 2020 started off a little on the warm side. A cold front
moved through on the 2nd resulting in a few hundredths of an inch
of rain followed by a series of cold nights. Frost was observed
in the area on the 3rd and the 4th with Medford reaching its
coldest temperature of the month on the morning of the 4th. This
was followed by an early season heat wave the 7th through the
10th, during which time average temperature peaked at 15 degrees
above normal and Medford reached 90 degrees for the first time in
the 2020 calendar year.

A weather pattern change arrived on the 11th and generally
persisted for two weeks as low pressure arrived from the Pacific
Ocean and sent a series of fronts through the area. This brought
some gusty winds that resulted in significant blowing dust in
portions Lake County on the 11th, as well as cooler conditions,
periods of rainfall, and even a couple of thunderstorm days in

Another warm-up began on the 23rd. This was the beginning of a
heat wave that peaked on the 28th with the hottest temperature of
the month. The average temperature for that day peaked at 17
degrees above normal. The last two days of the month saw a drastic
cool down of about 20 degrees as a very wet, negatively tilted
low pressure system brought record calendar day rainfall to the
climate sites of Medford, Roseburg, and Montague. Altogether, May
2020 was warmer and wetter than the 1981-2010 averages.

The average temperature for the month was 61.6 degrees, which is
1.8 degrees above normal. The average maximum temperature was 75.0
degrees, which is 1.7 degrees above normal. The average minimum
temperature was 48.2 degrees, which is 2.0 degrees above normal.
The highest temperature for the month was 96 degrees which
occurred on the 28th. The lowest temperature for the month was 36
degrees which occurred on the 4th.

There were 17 clear days, 6 partly cloudy days, and 8 cloudy days.

Total precipitation for the month was 2.50 inches which is 1.19 inches
above normal. Total precipitation for the water year (beginning
October 1st) is 11.40 inches which is 5.08 inches below normal.
Calendar year precipitation is 7.65 inches which is 1.19 inches
below normal.

The average wind speed for the month was 4.7 mph. The fastest
recorded two-minute wind speed was 28 mph from the west-northwest
which occurred on the 5th. The peak wind was 34 mph from the west
which occurred on the 5th.

The highest pressure for the month was 30.44 inches on the 6th.
The lowest pressure for the month was 29.62 inches on the 17th.

A new calendar day precipitation record was set on May 30th. The
new record of 1.47 inches broke the old record of 0.74 inches in


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