Average Precipitation for Massachusetts in May





The tables below give monthly averages for rainfall plus snowfall during May at cities, towns and parks in Massachusetts.

Each place has a total for the amount of precipitation it usually receives this month. Most sites also have information on the number of days with wet weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The precipitation totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.

You can jump to a separate table for each region of the state: Cape Cod and Islands, Eastern , Central and Western Massachusetts.

Cape Cod and Islands

Average monthly precipitation in May
Days Place Inches Milli­metres
11 Chatham 3.8 97
12 Edgartown, Martha's Vineyard 3.5 90
9 Hyannis 3.2 81
Nantucket 3.4 87
Vineyard Haven, Martha's Vineyard 3.3 84

Eastern Massachusetts

May averages for total rainfall plus snowfall
Days Place Inches Milli­metres
12 Boston 3.5 89
12 Brockton 3.6 91
12 East Wareham 3.7 94
13 Great Blue Hill, Milton 4.1 104
14 Haverhill 4.5 115
13 Hingham 4.0 102
11 Marblehead 3.8 97
12 New Bedford 3.6 92
12 Newburyport 4.3 109
13 Plymouth 3.9 100
11 Taunton 4.2 105

Central Massachusetts

Average amount of rain and snow in May
Days Place Inches Milli­metres
13 Amherst 4.1 105
13 Barre Falls Reservoir Dam 4.0 102
13 Buffumville Lake 3.7 95
13 East Brimfield Lake 3.8 96
12 Lowell 3.8 98
13 Tully Lake 3.8 97
14 Worcester 4.2 106

Western Massachusetts

Precipitation totals for May
Days Place Inches Milli­metres
14 Great Barrington 4.5 115
12 Knightville Reservoir Dam 4.5 114
12 Lanesboro 4.3 110
13 West Otis 4.1 104
15 Worthington 5.0 128
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Massachusetts Precipitation
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