Climatological Report (Monthly)
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000
CXAK57 PAJK 020431
CLMAJK
Climate Report
NATIONAL WEATHER SERVICE JUNEAU, AK
814 PM AKDT THU JUN 1 2017

...................................

...The JUNEAU climate summary for the month of May 2017...

Climate normal period 1981 to 2010
Climate record period 1936 to 2017

Weather         Observed          Normal  Depart  Last Year`s
                 Value   Date(s)  Value   From    Value
                                          Normal
.............................................................
Temperature (F)
Record
 High              82   05/27/1947
 Low               25   05/01/1972
                        05/11/1965
                        05/02/1956
Highest            71   05/16        70       1
Lowest             33   05/10        32       1
                        05/05
Avg. Maximum     56.7              56.6     0.1
Avg. Minimum     41.5              40.6     0.9
Mean             49.1              48.6     0.5
Days Max >= 90      0               0.0     0.0
Days Max <= 32      0               0.0     0.0
Days Min <= 32      0               1.6    -1.6
Days Min <= 0       0               0.0     0.0

Precipitation (inches)
Record
 Maximum         9.20   1992
 Minimum         0.52   2015
Totals           5.19              3.40    1.79
Daily Avg.       0.17              0.11    0.06
Days >= .01        17              16.3     0.7
Days >= .10        13               9.3     3.7
Days >= .50         3               1.6     1.4
Days >= 1.00        1               0.3     0.7
Greatest
 24 Hr. Total    1.53   05/21 to 05/21

Snowfall (inches)
Records
 Total            1.2   1964
 24 Hr Total      0.7   05/02/1945 to 05/03/1945
 Snow Depth         0   05/31/2002
Totals              T               0.0     0.0
Since 7/1        65.2              86.7   -21.5
Snowdepth Avg.      0
Days >= Trace       1               0.0     1.0
Days >= 1.0         0               0.0     0.0        0
Greatest
 Snow Depth         0
 24 Hr Total        T   05/03 to 05/03

DEGREE_DAYS
HEATING TOTAL     485               508     -23
 SINCE 7/1       7913              8030    -117
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0

FREEZE DATES
EARLIEST                        10/02
LATEST                          05/06
..............................................................

Wind (mph)
Average Wind Speed              7.8
Highest Wind Speed/Direction    35/120    Date  05/21
Highest Gust Speed/Direction    45/120    Date  05/21


Weather Conditions. Number Of Days With
Thunderstorm              0     Mixed Precip               0
Heavy Rain                1     Rain                       8
Light Rain               22     Freezing Rain              0
Lt Freezing Rain          0     Hail                       0
Heavy Snow                0     Snow                       0
Light Snow                0     Sleet                      1
Fog                      18     Fog w/vis <= 1/4 mile      0
Haze                      0

-  Indicates negative numbers.
R  Indicates record was set or tied.
MM Indicates data is missing.
T  Indicates Trace Amount.

$$
...A mix of above normal rain and beautiful spring weather this
May...

May began rainy across all of southeast Alaska but quickly dried out
and by the 5th of May, sunny skies and above normal daytime highs
were observed. Some more rain spread over the panhandle again at the
start of the second week of the month, but by the 10th of the month,
things dried out once again and temperatures rose to the upper 60 of
low 70s for the first time this year. Rain returned once again for
Mother`s Day weekend, but by the following Monday, the Sun once
again came out. An atmospheric river developed in the second half of
the month and a weather front brought record rainfall to a large
portion of the panhandle from the 20th to the 22rd of the month.
Numerous locations recorded 24 hour totals on more than 2 inches. In
spite of this heavy rain, panhandle creeks, streams, and rivers did
not flood. No significant winds were recorded during the first half
of the month, but windy conditions with gusts as high as 50 mph were
associated with the front that resulted in the record rainfall on
the 21st of the month. The month concluded with a fine Memorial Day
weekend that featured two days out of three with mostly clear skies
and warmer than normal daytime highs. The clear nights during the
holiday weekend and in the days immediately prior also resulted in
overnight lows down to or slightly below freezing in various
locations. This is later than normal for a last freeze of the
season.

$$

$$



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