National Weather Service United States Department of Commerce

Severe Thunderstorms Across the Upper Mississippi Valley and Central Plains; Excessive Rainfall Along the Texas Coast; Hot Conditions from the Ohio Valley to the Northeast

Scattered strong to severe thunderstorms capable of producing damaging winds, hail and heavy rainfall will be possible this afternoon over the Upper Mississippi Valley and Central Plains. A low pressure system in the Western Gulf of Mexico will bring heavy to excessive rainfall for much of South Texas. A dangerous heat wave will impact much of the Midwest to the Northeast through this week. Read More >

 

Monthly County Precipitation Normals (1980 - 2010) for May


... CONNECTICUT ...

                        County 
                       Averaged 
                        Normal 

FAIRFIELD                4.29 
HARTFORD                 4.17 
LITCHFIELD               4.41 
MIDDLESEX                4.17 
NEW HAVEN                4.37 
NEW LONDON               3.82 
TOLLAND                  4.01 
WINDHAM                  3.77 

... MASSACHUSETTS ...

                        County 
                       Averaged 
                        Normal 

BARNSTABLE               3.42 
BERKSHIRE                4.53 
BRISTOL                  3.67 
DUKES                    3.61 
ESSEX                    4.04 
FRANKLIN                 4.47 
HAMPDEN                  4.34 
HAMPSHIRE                4.40 
MIDDLESEX                3.95 
NANTUCKET                3.19 
NORFOLK                  3.77 
PLYMOUTH                 3.70 
SUFFOLK                  3.77 
WORCESTER                3.98 

... MAINE ...

                        County 
                       Averaged 
                        Normal 

ANDROSCOGGIN             3.98 
AROOSTOOK                3.52 
CUMBERLAND               3.95 
FRANKLIN                 4.22 
HANCOCK                  4.12 
KENNEBEC                 3.82 
KNOX                     3.87 
LINCOLN                  3.97 
OXFORD                   4.05 
PENOBSCOT                3.79 
PISCATAQUIS              3.80 
SAGADAHOC                3.94 
SOMERSET                 3.78 
WALDO                    4.03 
WASHINGTON               4.05 
YORK                     4.22 

... NEW HAMPSHIRE ...

                        County 
                       Averaged 
                        Normal 

BELKNAP                  3.95 
CARROLL                  4.32 
CHESHIRE                 4.10 
COOS                     4.21 
GRAFTON                  4.20 
HILLSBOROUGH             4.10 
MERRIMACK                4.01 
ROCKINGHAM               4.10 
STRAFFORD                4.10 
SULLIVAN                 3.92 

... NEW YORK ...

                        County 
                       Averaged 
                        Normal 

ALBANY                   3.74 
ALLEGANY                 3.60 
BROOME *                 3.66 
CATTARAUGUS              3.82 
CAYUGA                   3.34 
CHAUTAUQUA               4.02 
CHEMUNG *                3.29 
CHENANGO *               3.78 
CLINTON                  3.37 
COLUMBIA                 4.01 
CORTLAND *               3.66 
DELAWARE *               4.26 
DUTCHESS                 4.16 
ERIE                     3.52 
ESSEX                    3.89 
FRANKLIN                 3.62 
FULTON                   4.29 
GENESEE                  3.18 
GREENE                   4.17 
HAMILTON                 4.38 
HERKIMER                 4.29 
JEFFERSON                3.29 
LEWIS                    4.00 
LIVINGSTON               3.15 
MADISON                  3.77 
MONROE                   2.90 
MONTGOMERY               3.76 
NASSAU                   4.01 
NEW YORK CITY            4.04 
NIAGARA                  3.05 
ONEIDA                   4.07 
ONONDAGA                 3.52 
ONTARIO                  3.03 
ORANGE                   4.26 
ORLEANS                  2.99 
OSWEGO                   3.78 
OTSEGO *                 3.90 
PUTNAM                   4.19 
RENSSELAER               4.17 
ROCKLAND                 4.35 
SARATOGA                 4.07 
SCHENECTADY              3.74 
SCHOHARIE                3.89 
SCHUYLER                 3.10 
SENECA                   3.00 
STEUBEN *                3.29 
ST LAWRENCE              3.42 
SUFFOLK                  3.89 
SULLIVAN *               4.51 
TIOGA *                  3.47 
TOMPKINS                 3.41 
ULSTER                   4.50 
WARREN                   4.01 
WASHINGTON               3.88 
WAYNE                    3.05 
WESTCHESTER              4.19 
WYOMING                  3.59 
YATES                    2.97 

... RHODE ISLAND ...

                        County 
                       Averaged 
                        Normal 

KENT                     3.61 
NEWPT&BRISTOL            3.61 
PROVIDENCE               3.77 
WASHINGTON               3.61 

... VERMONT ...

                        County 
                       Averaged 
                        Normal 

ADDISON                  3.80 
BENNINGTON               4.88 
CALEDONIA                3.78 
CHITTENDEN               3.74 
ESSEX                    4.21 
FRANKLIN                 3.95 
GRAND ISLE               3.33 
LAMOILLE                 4.09 
ORANGE                   3.61 
ORLEANS                  4.15 
RUTLAND                  4.36 
WASHINGTON               3.96 
WINDHAM                  4.56 
WINDSOR                  4.13 


NOTE: COUNTIES MARKED WITH A * ARE SERVICED
BY THE MIDDLE ATLANTIC RIVER FORECAST CENTER.