New Hampshire Annual Rainfall and Climate Data, see below for individual cities 

 

New Hampshire city precipitation totals

City Avg Annual Precip Avg Annual Snow  Avg. days of Precip

Avg # thunderstorm days

Avg # hail days Avg # severe thunderstorm watches per year Avg # tornado watches per year # of tornadoes reported in county, 1960-2010
Concord 37.60 64.0 126 19 0 0 8 5
Mt Washington 101.91 260.3 209 15 2 0 5 5
  • New Hampshire Annual Precipitation Average - 43.42", 20th wettest state in the U.S.
  • New Hampshire Tornado Average - 1.6 per year - 41st most in the U.S. 
  • Largest reported Tornado in New Hampshire from 1950-2011, 7/2/1972 - 880 yards / .5 miles wide
  • Date with highest number of reported Tornadoes in New Hampshire from 1950-2011, May 31st and June 9th - 4 tornadoes each day
  • Average time of occurrence of reported Tornadoes in New Hampshire from 1950-2011 - 3:44 pm
  • New Hampshire Annual Lightning Density - 2.4 flashes per square mile - 43rd highest in U.S.
  • Record Driest year in New Hampshire from 1895-2012 - 1941, avg precipitation 30.28 inches 
  • Record Wettest year in New Hampshire from 1895-2012 - 2005, avg precipitation 60.79 inches

New Hampshire Precipitation Records

  • Driest location ranked by lowest annual precipitation: Monroe, central New Hampshire, 36.12"
  • Wettest location ranked by highest annual precipitation: Mt. Washington, north-central New Hampshire, 101.91"
  • Snowiest location ranked by highest annual snowfall: Mt. Washington, north-central New Hampshire, 315.4"
  • State precipitation record for 24 hours - Mt. Washington, north-central New Hampshire, 10/21-22/1996, 11.07"
  • State precipitation record for 1 year - Mt. Washington, north-central New Hampshire, 1969, 130.14"
  • State snowfall record for 24 hours - Randolf, northern New Hampshire, 11/23-24/1943, 56.0"
  • State snow record for 1 season - Mt. Washington, north-central New Hampshire, 1968-1969, 566.4"
  • Even during late May, Mount Washington can experience 10-foot high snow drifts. On average, winter winds exceed 100mph every 3 days. Mount Washington holds the world wind speed record of 231 mph, which occurred on April, 12th, 1934.
  • All of New Hampshire's weather reporting stations average over 48 inches of snow per year
  • New Hampshire temperature averages and extremes, precipitation and temperature data for all U.S. states and interesting Top 10 U.S.climate extremes
Data sources: National Climatic Data Center, Severe thunderstorm / tornado watch data period is 1999 - 2008, NOAA Storm Prediction Center, Tornado climate data - NOAA Storm Prediction Center, State lightning flash density average - 1997-2011, Vaisala