National Weather Service United States Department of Commerce

Heavy Rain and Flash Flooding Threat in Montana; Severe Thunderstorms in the Middle Missouri Valley

A low pressure system will bring heavy to excessive rainfall and high winds across Montana this afternoon. Heavy rainfall totals may lead to scattered flash flooding concerns. A line of showers and strong to severe thunderstorms will move into the mid Missouri Valley region this afternoon producing severe winds and isolated large hail with stronger storms. Read More >

Monthly County Precipitation Normals (1991 - 2020) for April


... CONNECTICUT ...

                        County 
                       Averaged 
                        Normal 

FAIRFIELD                4.07 
HARTFORD                 4.10 
LITCHFIELD               3.84 
MIDDLESEX                4.44 
NEW HAVEN                4.31 
NEW LONDON               4.50 
TOLLAND                  4.18 
WINDHAM                  4.32 

... MASSACHUSETTS ...

                        County 
                       Averaged 
                        Normal 

BARNSTABLE               4.32 
BERKSHIRE                3.93 
BRISTOL                  4.52 
DUKES                    4.29 
ESSEX                    4.18 
FRANKLIN                 4.07 
HAMPDEN                  4.07 
HAMPSHIRE                3.98 
MIDDLESEX                4.15 
NANTUCKET                4.28 
NORFOLK                  4.46 
PLYMOUTH                 4.58 
SUFFOLK                  4.29 
WORCESTER                4.12 

... MAINE ...

                        County 
                       Averaged 
                        Normal 

ANDROSCOGGIN             4.32 
AROOSTOOK                3.30 
CUMBERLAND               4.38 
FRANKLIN                 4.04 
HANCOCK                  4.16 
KENNEBEC                 4.03 
KNOX                     4.56 
LINCOLN                  4.38 
OXFORD                   4.13 
PENOBSCOT                3.68 
PISCATAQUIS              3.66 
SAGADAHOC                4.39 
SOMERSET                 3.63 
WALDO                    4.27 
WASHINGTON               4.07 
YORK                     4.41 

... NEW HAMPSHIRE ...

                        County 
                       Averaged 
                        Normal 

BELKNAP                  3.80 
CARROLL                  4.45 
CHESHIRE                 3.78 
COOS                     3.97 
GRAFTON                  3.94 
HILLSBOROUGH             3.95 
MERRIMACK                3.86 
ROCKINGHAM               4.07 
STRAFFORD                4.09 
SULLIVAN                 3.57 

... NEW YORK ...

                        County 
                       Averaged 
                        Normal 

ALBANY                   3.39 
ALLEGANY                 3.51 
BROOME *                 3.78 
CATTARAUGUS              3.78 
CAYUGA                   3.48 
CHAUTAUQUA               3.87 
CHEMUNG *                3.32 
CHENANGO *               3.90 
CLINTON                  3.22 
COLUMBIA                 3.45 
CORTLAND *               3.90 
DELAWARE *               3.84 
DUTCHESS                 3.60 
ERIE                     3.48 
ESSEX                    3.79 
FRANKLIN                 3.46 
FULTON                   4.32 
GENESEE                  3.09 
GREENE                   3.86 
HAMILTON                 4.29 
HERKIMER                 4.03 
JEFFERSON                3.42 
LEWIS                    3.79 
LIVINGSTON               3.00 
MADISON                  3.84 
MONROE                   2.91 
MONTGOMERY               3.51 
NASSAU                   4.04 
NEW YORK CITY            4.39 
NIAGARA                  3.14 
ONEIDA                   3.97 
ONONDAGA                 3.66 
ONTARIO                  3.00 
ORANGE                   3.80 
ORLEANS                  2.96 
OSWEGO                   3.75 
OTSEGO *                 3.92 
PUTNAM                   3.83 
RENSSELAER               3.46 
ROCKLAND                 4.34 
SARATOGA                 3.92 
SCHENECTADY              3.48 
SCHOHARIE                3.42 
SCHUYLER                 3.12 
SENECA                   3.06 
STEUBEN *                3.10 
ST LAWRENCE              3.42 
SUFFOLK                  4.12 
SULLIVAN *               3.94 
TIOGA *                  3.68 
TOMPKINS                 3.50 
ULSTER                   4.01 
WARREN                   4.01 
WASHINGTON               3.45 
WAYNE                    3.06 
WESTCHESTER              3.89 
WYOMING                  3.48 
YATES                    2.94 

... RHODE ISLAND ...

                        County 
                       Averaged 
                        Normal 

KENT                     4.67 
NEWPT&BRISTOL            4.55 
PROVIDENCE               4.64 
WASHINGTON               4.64 

... VERMONT ...

                        County 
                       Averaged 
                        Normal 

ADDISON                  3.43 
BENNINGTON               4.42 
CALEDONIA                3.62 
CHITTENDEN               3.52 
ESSEX                    3.74 
FRANKLIN                 3.55 
GRAND ISLE               3.04 
LAMOILLE                 4.12 
ORANGE                   3.42 
ORLEANS                  3.77 
RUTLAND                  3.88 
WASHINGTON               3.75 
WINDHAM                  4.32 
WINDSOR                  3.75 


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