Weather Forecast for Manchester (US)

New Hampshire, United States of America

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Heavy rain

Current Weather - Manchester (US): 22°C

New Hampshire, United States of America

Heavy rain

Feels like 24°C

Wind

15 km/h S

Humidity

96%

Pressure

1009 mb

UV Index

0

Visibility

10 km

Patchy rain nearby

Patchy rain nearby

Monday, August 03, 2026

High

28°C

Low

19°C

Rain Chance

84%

Hourly Forecast

Moderate rain at times 24°C
14:00
Patchy rain nearby 27°C
15:00
Patchy light drizzle 27°C
16:00
Patchy rain nearby 26°C
17:00
Patchy rain nearby 23°C
18:00
Sunny 23°C
19:00
Sunny 22°C
20:00
Clear 21°C
21:00
Partly Cloudy 19°C
22:00
Partly Cloudy 19°C
23:00
Aug 04

Day Statistics

Maximum Wind

20 km/h

Humidity

84%

Precipitation

46 mm

UV Index

3

Visibility

8 km

Rain Chance

84%

Snow Chance

0%

Sun & Moon

Sunrise

05:38 AM

Sunset

08:05 PM

Moonrise

10:10 PM

Moonset

10:52 AM

Moon Phase

Last Quarter

Moon Illumination

65%

Air Quality

PM2.5

2.4

μg/m³

PM10

2.8

μg/m³

NO₂

3.2

μg/m³

O₃

66.2

μg/m³

SO₂

0.4

μg/m³

CO

122.8

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

1.73

Diffuse Radiation

1.37

DNI

0

GTI

0

Weather Alerts

Flash Flood Warning issued August 3 at 7:55AM EDT until August 3 at 11:15AM EDT by NWS Gray ME

Hillsborough, NH; Merrimack, NH; Rockingham, NH; Strafford, NH Aug 3, 07:55 AM - Aug 3, 11:15 AM
Severity: Severe Urgency: Immediate

At 755 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. The expected rainfall rate is 1 to 3 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. The heaviest rainfall is expected in southeastern Hillsborough County and southeastern Rockingham County. Urban flash flooding is expected. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include... Manchester, Nashua, Derry, Merrimack, Durham, Exeter, Salem, Northwood and Bedford. This includes the following highways... Interstate 93 between mile markers 1 and 31. Interstate 293 between mile markers 1 and 11.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.

Event: Flash Flood Warning Certainty: Likely Category: Met

Flash Flood Warning issued August 3 at 7:21AM EDT until August 3 at 11:15AM EDT by NWS Gray ME

Hillsborough, NH; Merrimack, NH; Rockingham, NH; Strafford, NH Aug 3, 07:21 AM - Aug 3, 11:15 AM
Severity: Severe Urgency: Immediate

FFWGYX The National Weather Service in Gray has issued a * Flash Flood Warning for... Southeastern Merrimack County in central New Hampshire... Southwestern Strafford County in central New Hampshire... Southern Hillsborough County in southern New Hampshire... Rockingham County in southern New Hampshire... * Until 1115 AM EDT. * At 721 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. The expected rainfall rate is 1 to 3 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Manchester, Nashua, Derry, Merrimack, Durham, Exeter, Salem, Northwood and Bedford. This includes the following highways... Interstate 93 between mile markers 1 and 30. Interstate 293 between mile markers 1 and 11.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.

Event: Flash Flood Warning Certainty: Likely Category: Met

Flood Advisory issued August 3 at 6:10AM EDT until August 3 at 9:15AM EDT by NWS Gray ME

Hillsborough, NH; Merrimack, NH; Rockingham, NH; Strafford, NH Aug 3, 06:10 AM - Aug 3, 09:15 AM
Severity: Minor Urgency: Expected

* WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...Portions of central and southern New Hampshire, including the following counties, in central New Hampshire, Merrimack and Strafford. In southern New Hampshire, Hillsborough and Rockingham. * WHEN...Until 915 AM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 610 AM EDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 0.5 and 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Manchester, Nashua, Derry, Rochester, Merrimack, Salem, Northwood, Bedford and Milford.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.

Event: Flood Advisory Certainty: Likely Category: Met

Flash Flood Warning issued August 3 at 8:01AM EDT until August 3 at 10:00AM EDT by NWS Boston/Norton MA

Middlesex, MA; Worcester, MA Aug 3, 08:01 AM - Aug 3, 10:00 AM
Severity: Severe Urgency: Immediate

At 801 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Lowell, Leominster, Fitchburg, Chelmsford, Dracut, Westford, Gardner, Holden, Athol, Pepperell, Tyngsborough, Groton, Winchendon, Lunenburg, Townsend, Littleton, Lancaster, Templeton, Rutland and Sterling.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.

Event: Flash Flood Warning Certainty: Likely Category: Met

Flash Flood Warning issued August 3 at 6:49AM EDT until August 3 at 10:00AM EDT by NWS Boston/Norton MA

Middlesex, MA; Worcester, MA Aug 3, 06:49 AM - Aug 3, 10:00 AM
Severity: Severe Urgency: Immediate

FFWBOX The National Weather Service in Norton has issued a * Flash Flood Warning for... Northern Worcester County in central Massachusetts... Northwestern Middlesex County in northeastern Massachusetts... * Until 1000 AM EDT. * At 649 AM EDT, Doppler radar indicated heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Lowell, Leominster, Fitchburg, Chelmsford, Dracut, Westford, Gardner, Holden, Athol, Pepperell, Tyngsborough, Groton, Winchendon, Lunenburg, Townsend, Littleton, Lancaster, Templeton, Rutland and Sterling.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Event: Flash Flood Warning Certainty: Likely Category: Met