Robbinston News

Town News

Kathy Mekelburg



Annual Weather Summary for 2017

The year was mild, but a bit cooler than 2016. The yearly mean temperature of 45.1 degrees was 1.1 degrees above normal. This compares to an annual mean temperature of 45.8 degrees in 2016 and a mean of 46.7 degrees in 2010, the warmest year on record.

Maximum temperature of 91 degrees occurred May 18th. This is the first time in 23 years of record than the yearly maximum has occurred in May! There were no 90 degree readings from June to August. Minimum temperature -8 degrees occurred on February 11th, December 28th and December 30th. Greatest daily temperature range was 43 degrees on May 18th. There were 36 days with maximums 80 degrees or above, 49 days with maximums 32 degrees or below, 154 days with minimum 32 degrees or below, and 12 days with minimums zero or  below. Warmest daily minimum temperature was 53 degrees on July 19th, while the coldest daily maximum temperature was 1 degree on December 28th. Warmest daily mean temperature was 74.5 degrees on July 21st, while the coldest daily mean temperature was -3.5 degrees on December 28th. Earliest ice day (max. 32 or below) occurred on December 10th (ties for latest fall date set December 10th. 1998), while the latest ice day occurred on March 27th. Earliest freeze fell on October 13th, while the last freeze in spring fell on April 25th. Growing season length was 170 days. This is the second longest growing season in 23 years of record. Longest is 171 days in 2013. Average is 151 days.

Total precipitation of 56.83 inches was .l82 inches above normal. Most in an hour was .78 inches on October 25th. Most in a day was 4.12 inches on May 6th. Greatest storm was 5.95 inches on October 25th - 26th (this is the storm that ended drought)! There were 143 days with measurable precipitation. longest wet days was 10 days (Feb.7th - 16th), while the longest dry spell was 13 days (August 21st - September).

Total annual snowfall of 116.1 inches was 19.2 inches above normal. Maximum daily snowfall was 26.2 inches on February 13th, while the greatest snow storm total was 28.2 inches on February 12 - 13th. This snow storm was the  greatest on record for any month! This was part of a massive snow event (February 7th - 16th) in which 62 inches of snow fell in a ten day period: this even beat the winter of 2015 in which 55 inches fell in a ten day period! There were 44 days with measurable snow fall. There were 123 days with snow  depths of a foot or more. Maximum snow depth was 33 inches on February 13th. This falls far short of the  53 inch snow depth reached on February 25, 2015. Longest period of continuous snow cover was 125 days (December 5th, 2016 through April 8th, 2017). First trace of snow fell on November 10th, while the last trace of snow fell on Sept. 23rd.

Mean barometer for the year was 29.98 inches. Highest barometer was 30.71 inches on January 14th, while the lowest was 28. 95 inches on December 13th (this was the lowest barometer since December 30, 2016)! Mean relative humidity was 79.percent. Lowest humidity reached was 20 percent on April 15th. Prevailing winds were southwest (91 days). Average speed was 3.2 miles per hour. Peak gust was 58 miles per hour on March 14th. There were 10 days with peak winds r hour or more. There were 64 clear days, 123 partly days and 178 cloudy days. Daytime  sky cover averaged 68 percent. There were 48 days with heavy fog and  17 days with thunder storms. The first thunder storm of the season occurred on April 7th, while the last thunder storm of the season occurred on September 9th