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December notes...

       Windiest December since 2009.  For gusts 50mph or higher at least six occured on Christmas Day and three on December 1st.  The term "at least" is used because the archive interval I have my weather station set at of 30 minutes.  If multiples occurred in the 30 minutes only the top gust shows.  Reviewed notes on these days to see if othjer high gusts were noted. None were.

Top gusts I have recorded are:

60 mph on January 18, 2006

59 mph on December 25, 2020

59 mph on  April 8,1999

59 mph on March 22, 1999

58 mph on December 1,2020

57 mph on December 25, 2020

57 mph on October 28, 2006

Interesting the top gusts occur in the same years.

     The top rain storm in December is the Christmas storm, however the storm that ended on the 1st but began November 30th was 2.02"

Daily Records summary:

     There were two record high temps and no record low temp set in December.  There were two records set for cold high temps, joined by two records set in warm daily low temps.

     2020 temperature records now stand at 21 record highs, 12 record lows.  Ten records have been set for coldest high temps, with 18 days setting records for warmest low temps.  

     Summary 2020 total: 39 warm records and 22 cold records.


December rankings (out of 23):

High Temp:     6th

Low Temp:     4th

Avg Temp:          5th

Precip:          7th* (tie with 2015)

Wind:          8th

Humidity:          6th

Dew Point:     3rd

Heat Deg:          19th

Cool Deg:          --

Barometer:     13th out of 17



Liberty, Maine weather data for...

December, 2020

Daily Data

High Temp              58.0° (12/1)

Low Temp               3.9° (12/16)

Top Rain Storm       0.93" (12/24-26)

Top Snow Storm     7.25" (12/5-6)

High Wind Gust      59 mph (12/25)

Low Windchill          -7° (12/16)

High Dew Point      58.0° (12/1)     

Low Dew Point       -7.6° (12/16)

Barometer  H/L      1031.2/984.2mb

Precipitation Days    15

2020 Averages

High Temp              36.33°

Low Temp               24.22°

Avg. Temp               30.27°

Precip.                       3.48”

Snow                       14.45”

High Wind Gust       22.00 mph

Humidity                   78.42%

Dew Point                 24.61°

Degree Days            1076.5

Cooling Deg Days     0

Barometer            1012.16 mb

Red= record high since 1998

Blue= record low since 1998

Difference from 2019

High Temp         +2.26°

Low Temp          +3.24°

Avg. Temp         +2.75°

Precip.               +0.17”

Snow                  -0.45”

High Gust          +1.65 mph

Humidity            +6.03%

Dew Point          +5.04°

Degree Days      -85.25

Cooling Days      0

Barometer          -1.36 mb

20 Year Avg.

High Temp      34.02°

Low Temp       20.46°

Avg. Temp       27.24°

Precip.               3.22”

Snow                19.58”

High Gust         21.53 mph

Humidity           74.58%

Dew Point         19.76°

Degree Days     1170.71

Cooling Days         0

Barometer (17yrs)   1012.78


(avg 1998-2017)

2020 Vs. Average

High Temp         +2.31°

Low Temp          +3.76°

Avg. Temp         +3.03°

Precip.               +0.26”

Snow                  -5.13”

High Gust          +0.47 mph

Humidity            +3.84%

Dew Point          +4.85°

Degree Days     -94.21

Cooling Days      0

Barometer          -0.62mb

Difference from last month (Nov 2020)

High Temp      -14.27°

Low Temp       -9.56°

Avg. Temp      -11.92°

Precip.            +1.87”

Snow              +12.95”

High Gust        +1.60 mph

Humidity          +4.57%

Dew Point        -9.93°

H Degree Days  +392.1

C Deg Days      0

Barometer       -4.26mb

Season snowfall amounts:

(Highest to Lowest)

'14-'15    148.25"

'07-'08    135.90"

'00-'01    126.98"

'10-'11    125.10"

’17-’18    108.15"

’12-’13    100.70"

’18-’19      96.70"

’16-’17      93.65 "

'08-'09      90.25"

'01-'02      85.15"

’13-’14      82.95"

'06-'07      82.65"

'03-'04      78.75"

'98-'99      78.65"

'09-'10      78.45"

'02-'03      74.00"

’19-’20      73.85"

’11-’12      68.70"

'99-'00      64.90"

'05-'06      50.35"

’15-’16      50.10"

'04-'05      44.77"

’20-’21      23.85"


22 season average: 88.14"

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20 Year

Summary Charts

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Yearly Summary

2020

May 9th snowstorm.

Lowest Atlantic Pressures

During one of the two December bike rides.