Petaluma Bombing Target Archive Search Report ... - Corpsfuds.org

Month
November
December
Average
ARCHIVES SEARCH REPORT - FINDINGS
Petaluma 12th Naval District Target No. 9
Petaluma, CA
Table 3.2 1 - Climatological Data For San Francisco, CA
Temperature Precipitation
Wind
Average Average
Average
Minimum Maximum Average Speed Average
(OF)
55
(OF)
63
(Inches)
2.3
Miles/Hour
10
Direction
WNW
50 56 3.5
9 WNW
57 65 19.3
12 WNW
Table 3.2.2 - Climatolo~ical Data For Petaluma. CA
Temperature Precipitation Wind
Month Average Average
Average
Minimum Maximum Average Speed Average
January
February
March
April 1
May
June
July
August
September
October
November 1
December
Average
(OF)
38
40
41
43
47
50
52
52
5 1
47
42
38
45
1
1
(OF)
57
62
64
68
73
7 8
82
8 3
8 2
76
66
57
71
1
1
(Inches)
5.70
4.60
3.41
1.57
0.5 1
0.19
0.03
0.08
0.25
1.35
3.38
4.18
25.24
Miles/Hour Direction
-
-
-
-
-
-
I - I -
-
-
-
-
-
-
-
-
-
-
-
-
I - I -
-
-
-
-
The region around San Francisco enjoys a marine-type climate characterized by mild and
moderately wet winters and by dry, cool summers. Winter rains, occurring from
November through March, account for over 80 percent of the annual rainfall. Measurable
precipitation occurs on an average of 10 days per month during the winter period.
However, there are frequent dry periods lasting well over a week as well. Severe winter
storms with gale force winds and heavy rains occur only occasionally. Thunderstorms
average two a year and may occur in any month. The maximum 24-hour rainfall was
measured at 5.6 inches and occurred during the month of January. The maximum
snowfall was recorded at only 2 inches and occurred during the month of January.
The daily and annual range in temperature is small. A few frosty mornings occur during
the winter but the temperature seldom drops below freezing. Winter temperatures
Section 3 - Site Description
Page 5