Is it going to rain on Halloween? Just flip a coin to find out

Is it going to rain on Halloween? Just flip a coin to find out

Oct. 31 is historically the day with the most frequent rain occurrences in October, but that's to be expected since we're rapidly heading toward the rainy peak of our year in mid-November and late October is much wetter than the start of the month.

What *is* a bit amusing is that there has been a distinct lack of rain on Nov. 1 -- just 56 times in the past 120 years. This is similar to the smirk Mother Nature gives us by having July 4th being the wettest day in July, with somewhat drier weather historically on July 3rd and 5th.

The last few years have been relatively mild with highs in the mid 50s to even 60 degrees last year -- four of the past five years have been warmer than the average high of 55.

This year's version will probably fit in right around normal. We're expecting highs in the normal mid 50s range. There will be some showers in the morning, but showers will be decreasing in the afternoon so there is a decent chance much of the region will be dry and you can parade around in that Gremlins costume with no issues (just no eating candy once it passes midnight!)

Here is the past 10 years' data from the National Weather Service:

059
NOUS46 KSEW 272100
PNSSEW

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SEATTLE WA
200 PM PDT SUN OCT 27 2013

..HALLOWEEN WEATHER STATISTICS...

.SEA-TAC AIRPORT...

OBSERVATIONS BEGAN IN 1945

HIGHEST TEMPERATURE...71 DEGREES IN 1949
LOWEST TEMPERATURE...30 DEGREES IN 2006*

LOWEST MAXIMUM TEMPERATURE...41 DEGREES IN 1984
HIGHEST MINIMUM TEMPERATURE...54 DEGREES IN 1987

MOST PRECIPITATION...1.04 INCHES IN 1990

NORMAL HIGH TEMPERATURE...55 DEGREES
NORMAL LOW TEMPERATURE...43 DEGREES
NORMAL PRECIPITATION...0.17 INCHES

CLIMATIC DATA FOR THE PAST 10 HALLOWEEN DAYS

YEAR    HIGH    LOW     PRECIP

2012    60      52      0.57
2011    53      42      TRACE
2010    56      47      0.16
2009    57      45      0.04 
2008    59      50      0.35
2007    47      34      TRACE
2006    47      30      0.00
2005    54      48      0.73
2004    51      37      0.00
2003    46      30      0.00

.OLYMPIA AIRPORT...

OBSERVATIONS BEGAN IN 1948

HIGHEST TEMPERATURE...74 DEGREES IN 1949
LOWEST TEMPERATURE...14 DEGREES IN 2002

LOWEST MAXIMUM TEMPERATURE...42 DEGREES IN 1956
HIGHEST MINIMUM TEMPERATURE...53 DEGREES IN 1962

MOST PRECIPITATION...2.95 INCHES IN 1994

NORMAL HIGH TEMPERATURE...55 DEGREES
NORMAL LOW TEMPERATURE...39 DEGREES
NORMAL PRECIPITATION...0.22 INCHES

CLIMATIC DATA FOR THE PAST 10 HALLOWEEN DAYS

YEAR    HIGH    LOW     PRECIP

2012    59      51      1.05
2011    56      32      0.00
2010    56      41      0.09
2009    56      40      0.13
2008    58      50      0.56
2007    46      29      0.00
2006    49      19      0.00
2005    55      50      1.67
2004    54      38      0.00
2003    47      25      0.00

.QUILLAYUTE AIRPORT...

OBSERVATIONS BEGAN IN 1966

HIGHEST TEMPERATURE...67 DEGREES IN 1970
LOWEST TEMPERATURE...23 DEGREES IN 2006

LOWEST MAXIMUM TEMPERATURE...43 DEGREES IN 1984
HIGHEST MINIMUM TEMPERATURE...54 DEGREES IN 1981

MOST PRECIPITATION...3.00 INCHES IN 1981

NORMAL HIGH TEMPERATURE...54 DEGREES
NORMAL LOW TEMPERATURE...40 DEGREES
NORMAL PRECIPITATION...0.45 INCHES

CLIMATIC DATA FOR THE PAST 10 HALLOWEEN DAYS

YEAR    HIGH    LOW     PRECIP

2012    55      53      1.24
2011    53      36      0.07
2010    54      41      0.17
2009    54      39      0.14
2008    61      53      0.74
2007    51      33      0.07
2006    51      23      TRACE
2005    55      47      1.00
2004    53      33      0.00
2003    47      29      TRACE

.HOQUIAM AIRPORT...

OBSERVATIONS BEGAN IN 1953

HIGHEST TEMPERATURE...67 DEGREES IN 1970*
LOWEST TEMPERATURE...28 DEGREES IN 2002

LOWEST MAXIMUM TEMPERATURE...42 DEGREES IN 1984
HIGHEST MINIMUM TEMPERATURE...56 DEGREES IN 1981

MOST PRECIPITATION...2.43 INCHES IN 1994

NORMAL HIGH TEMPERATURE...55 DEGREES
NORMAL LOW TEMPERATURE...43 DEGREES
NORMAL PRECIPITATION...0.31 INCHES

CLIMATIC DATA FOR THE PAST 10 HALLOWEEN DAYS

YEAR    HIGH    LOW     PRECIP

2012    57      54      1.75
2011    53      35      0.03
2010    55      43      0.11
2009    55      41      0.15
2008    59      52      0.28
2007    51      36      0.02
2006    54      29      0.00
2005    56      51      1.90
2004    51      37      0.01
2003    49      30      0.00

.BELLINGHAM AIRPORT...

OBSERVATIONS BEGAN IN 1949

HIGHEST TEMPERATURE...67 DEGREES IN 1958
LOWEST TEMPERATURE...20 DEGREES IN 1984

LOWEST MAXIMUM TEMPERATURE...31 DEGREES IN 1984
HIGHEST MINIMUM TEMPERATURE...56 DEGREES IN 1981

MOST PRECIPITATION...1.06 INCHES IN 1967

NORMAL HIGH TEMPERATURE...54 DEGREES
NORMAL LOW TEMPERATURE...40 DEGREES
NORMAL PRECIPITATION...0.16 INCHES

CLIMATIC DATA FOR THE PAST 10 HALLOWEEN DAYS

YEAR    HIGH    LOW     PRECIP

2012    62      51      0.64
2011    52      43      0.00
2010    55      49      0.36
2009    56      39      0.10
2008    59      47      0.35
2007    48      31      0.01
2006    49      25      0.00
2005    53      47      0.33
2004    50      37      0.01
2003    45      30      0.00

.WFO SEATTLE AT SANDPOINT...

OBSERVATIONS BEGAN IN 1986

HIGHEST TEMPERATURE...67 DEGREES IN 1988
LOWEST TEMPERATURE...31 DEGREES IN 2006

LOWEST MAXIMUM TEMPERATURE...44 DEGREES IN 1991
HIGHEST MINIMUM TEMPERATURE...55 DEGREES IN 1987

MOST PRECIPITATION...0.89 INCHES IN 2012

NORMAL HIGH TEMPERATURE...55 DEGREES
NORMAL LOW TEMPERATURE...44 DEGREES
NORMAL PRECIPITATION...0.16 INCHES

CLIMATIC DATA FOR THE PAST 10 HALLOWEEN DAYS

YEAR    HIGH    LOW     PRECIP

2012    60      52      0.89
2011    55      41      0.01
2010    58      50      0.07
2009    59      47      0.01
2008    58      51      0.34
2007    48      36      0.00
2006    48      31      0.00
2005    55      49      0.42
2004    53      38      0.00
2003    47      33      0.00

NORMAL TEMPS AND PRECIPITATION ARE THE 1981 TO 2010 CLIMATE NORMALS.
*RECORDS WERE TIED IN MULTIPLE YEARS WITH THE LATEST YEAR SHOWN.