Narrative Summary - July 2007

July 2007 was much warmer than normal, averaging 81.0ºF, 4.7º above normal (76.3ºF). This was the 5th
warmest July on record, and the 12th month on record with an average temperature > 80ºF . The hottest
July (1985) averaged 82.2ºF, while the coolest (1993) averaged 70.5ºF. There were 28 days in July with
maximum temperatures >= 90ºF compared to a July normal of 19. There have been 38 days this year with
maximum temperatures >= 90ºF compared to a normal (through July) of 30 days. There were 11 days in
July with maximum temperatures >= 100ºF compared to a July normal of 6. There have been 13 days this
year with maximum temperatures >= 100ºF compared to a normal (through July) of 7. The following daily
temperatures records were established during July 2007:

			New	Old 
Date    Category	Record Record	Year
 5	High Maximum	 110	108	1975
12	High Minimum      78	 75	1990

Precipitation for July 2007 totaled only a 0.07 inches, 26% of normal (0.27 inch). The wettest July
(1993) received 1.76 inches, while the driest (2003) received no precipitation. Total precipitation for
2006 (through July) is 2.72 inches, 72% of normal (3.80 inches).

The average wind speed for July 2007 was 8.8 miles per hour (mph), which was 0.2 mph above normal
(8.6 mph). The windiest July (1983) averaged 10.7 mph, while the July with the lightest winds (1955)
averaged 6.8 mph. The peak gust for July 2007 was 42 mph on July 7. The record wind gust for July was
69 mph in 1979.

The monthly climatological data summaries, as well as other information, are available on the Internet.
Address: http://hms.pnl.gov/

For additional information contact:
Ken Burk373-3215
HMS Staff372-2716

Note: The information in this summary pertains specifically to
the Hanford Meteorology Station (HMS), which is located
approximately 25 miles northwest of Richland, Washington. No
attempt should be made to infer meteorological conditions at other
locations from these data.