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East Merrimack, New Hampshire Weather

Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →

East Merrimack weather forecast — hour by hour, 7-day outlook, NOAA radar

East Merrimack, NH
Sunday, July 5 at 12:29 AM
73
°
Clear
Feels like
74°
Humidity
67%
Wind
6 mph
Sunrise
1:13 AM
Sunset
4:27 PM
East Merrimack, NH
Hour by hour · 24h
24-Hour ForecastEast Merrimack, NH: 24-hour forecast. Temperatures range from 65 to 89 degrees Fahrenheit.
L 65°H 89°
East Merrimack, NH
7-day forecast
  1. Today
    Jul 5
    Overcast
    —
    —
    89°65°—
  2. Monday
    Jul 6
    Light Drizzle
    48%
    0.03″
    74°60°-15°
  3. Tuesday
    Jul 7
    Showers
    57%
    0.82″
    60°57°-14°
  4. Wednesday
    Jul 8
    Overcast
    29%
    —
    83°51°+23°
  5. Thursday
    Jul 9
    Overcast
    14%
    —
    88°60°+5°
  6. Friday
    Jul 10
    Light Showers
    44%
    0.44″
    82°66°-6°
  7. Saturday
    Jul 11
    Light Drizzle
    27%
    0.02″
    85°60°+3°
East Merrimack, NH
Next 24 hours · Mild now
HOT 90°60°78°95°12a6a12p6pnow 73°high 89°low 65°
East Merrimack, NH
Anemometer · 24h winds · from true
NESW
From · True
NNW
342° · veering 106°
Direction
NNW
342°
Sustained
6
mph
Gust
12
mph
Peak 24h
18
avg 6
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 6 · pk 18 @ 1:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 195SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 106° from the nnw.
East Merrimack, NH
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1007.1
+0.6 mb in 3h · rising · 29.74 inHg
Now
1007.1
mb
3h
+0.6
mb
12h
+1.3
mb
24h
+1.5
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1005–1007
1000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR-21h-18h-15h-12h-9h-6h-3h-24hNOW1006.91005.11006.9
−24h−18h−12h−6hnow
Damp, unsettled regime — wet weather lingers nearby.
East Merrimack, NH
Air quality
35
AQI
Good
↓-10 in 6h

AQI 35 (Good), driven by PM2.5. AQI down 10 over the last 6 hours (gradual decline). PM2.5 at 8.1 µg/m³ (AQI 45) with a 0.96 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERGood
8.1μg/m³
PM 10Good
8μg/m³
NO₂Good
4μg/m³
OzoneGood
60μg/m³
UV IndexLow
0.0

What's driving it

PM × Wind × Precip

PM2.5 at 8.1 µg/m³ (AQI 45) with a 0.96 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.96
Wind
light
Recent rain
0h in last 6h
Pattern
stagnant smoke

Trends

Seven days of AQI and PM2.5.

Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³370
East Merrimack, NH
Sky cover · visibility · 24h
Cloud cover
4%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
53.8mi
UNLIMITED
69 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
04:29 UTC · East Merrimack, NH · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
04:29 UTC · East Merrimack, NH · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
East Merrimack, NH
Satellite · infrared · animated
East Merrimack, NH
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
East Merrimack, NH
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:38 AM
Sunrise
1:13 AM
Daylight
15h 14m
Sunset
4:27 PM
Civil dusk
9:03 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
East Merrimack, NH
The moon
Waning Gibbous
76% illuminated
Moonrise
11:04 PM
Moonset
10:54 AM
In sign
♓︎ Pisces
East Merrimack, NH
Microseason
Jul 1–5

Cicadas claim the afternoon

fish
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

East Merrimack at a glance

  • Today vs. normal: 4°F above the seasonal normal for this latitude
  • Last frost: May 3 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

15-Day Forecast — East Merrimack

  1. Sun89°65°3%
  2. Mon74°60°48%
  3. Tue60°57°57%
  4. Wed83°51°29%
  5. Thu88°60°14%
  6. Fri82°66°44%
  7. Sat85°60°27%
  8. Sun80°61°25%
  9. Mon84°56°22%
  10. Tue88°61°25%
  11. Wed83°66°32%
  12. Thu81°60°35%
  13. Fri85°53°28%
  14. Sat90°57°30%
  15. Sun95°69°41%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

SPC Convective Outlook

Storm Prediction Center — East Merrimack

SPC includes East Merrimack in the general thunderstorm area today — no severe risk, but storms are possible.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWNONENo severe risk
  • DAY 3NONENo severe risk

Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.

Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.

January 1–5: The year turns in silence.January 6–10: Ice thickens on still water.January 11–15: Shortest shadows lengthen.January 16–20: Pheasants begin to call.January 21–25: Springs begin to thaw.January 26–31: Chickadees announce dawn.February 1–5: East wind softens the frost.February 6–10: Sap begins to rise.February 11–15: First snowdrops appear.February 16–20: Red-winged blackbirds return.February 21–25: Rain begins to replace snow.February 26–28: Skunk cabbage pushes through ice.March 1–5: Ice withdraws from the reservoir.March 6–10: Crocuses open to weak sun.March 11–15: Peepers call from the marsh.March 16–20: Woodcocks spiral at dusk.March 21–25: Equinox — light overtakes dark.March 26–31: Forsythia opens along the fences.April 1–5: Cherry blossoms drift like snow.April 6–10: Warblers appear in the understory.April 11–15: Magnolias bloom and fall in a day.April 16–20: Dogwoods float above the forest.April 21–25: Lilacs perfume the evening.April 26–30: Last frost releases the garden.May 1–5: Warblers flood the Ramble.May 6–10: Tulip poplars light their candles.May 11–15: Shad run up the rivers.May 16–20: Roses open along the stoops.May 21–25: Firefly scouts appear at dusk.May 26–31: Strawberries ripen in the sun.June 1–5: Fireflies rise from the lawn.June 6–10: Elderflowers open in hedgerows.June 11–15: Solstice approaches — longest light.June 16–20: Honeysuckle sweetens the night.June 21–25: Solstice — the sun stands still.June 26–30: Lightning bugs drift through oaks.July 1–5: Cicadas claim the afternoon.July 6–10: Queen Anne's lace lines the roads.July 11–15: Thunder builds each afternoon.July 16–20: Corn reaches for the tassels.July 21–25: Dog days settle in the haze.July 26–31: Katydids begin their chorus.August 1–5: Night falls a minute earlier.August 6–10: Sunflowers face the morning.August 11–15: Goldenrod begins to bloom.August 16–20: Crickets pulse through warm nights.August 21–25: First cool morning surprises.August 26–31: Monarchs stage for flight.September 1–5: School buses reappear.September 6–10: Asters purple the roadsides.September 11–15: Hawk migration over the Hudson.September 16–20: Equinox — dark overtakes light.September 21–25: Apples hang heavy on the branch.September 26–30: Geese begin to chevron south.October 1–5: Witch hazel blooms as others fade.October 6–10: Maples begin to blaze.October 11–15: Frost paints the garden black.October 16–20: Oaks turn bronze and russet.October 21–25: Leaves rattle down the gutters.October 26–31: Clocks fall back — dusk at five.November 1–5: Ginkgos drop overnight.November 6–10: Last leaves cling stubbornly.November 11–15: Juncos arrive from the north.November 16–20: Bare branches reveal the sky.November 21–25: First flurries dust the rooftops.November 26–30: Woodsmoke curls through the block.December 1–5: Darkness settles before dinner.December 6–10: Holly and winterberry persist.December 11–15: Shortest day approaches.December 16–20: Ice begins to form at the edges.December 21–25: Solstice — the sun begins return.December 26–31: The year turns in silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

Cicadas claim the afternoon

Annual cicada buzz begins, peaking in the heat of the day.

Day 186 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
March——
April——
Maylettuce, peas, spinach, radisheslettuce, peas, radishes
Junelettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
Augusttomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
October—winter squash, tomatoes (last)
November——
December——

A year in weather

July is East Merrimack's warmest stretch (~73°F) and January its coldest (~24°F); precipitation crests in October at 4.7 inches and ebbs in January to 3.0 inches.

MonthMean tempPrecipRainy days
January24°3.0″10
February27°3.1″10
March35°4.1″14
April47°3.9″13
May58°3.6″12
June67°4.2″14
July73°3.6″12
August71°3.7″12
September64°4.2″14
October51°4.7″16
November40°3.7″12
December30°4.5″15

Regional context

Per NOAA NCEI 1991-2020 normals, East Merrimack runs from a 24°F January mean to 73°F in July, a 49°F seasonal spread, with near 46.3 inches of precipitation across about 154 wet days.

East Merrimack's precipitation spreads evenly: October peaks at 4.7 inches on 16.0 wet days, while January holds 3.0 inches over 10.0 — no month dominates East Merrimack's rain calendar. It is a balanced pattern East Merrimack shares with places like Manchester, NH, Nashua, NH and Pinardville, NH.

Once East Merrimack passes late-May, overnight freezes fade and kale, peas, spinach, and parsnips can be sown. Tomatoes and peppers do best set out two weeks later in East Merrimack, once nights clear the mid-40s°F. By early-October, frost is back in East Merrimack — protect or harvest anything tender. A creek-bottom lot in East Merrimack can lag East Merrimack's last frost 7-10 days behind a south slope.

Similar climates: Manchester, NH, Nashua, NH, Pinardville, NH, Klondike Corner, NH, South Hooksett, NH.

Frequently asked

When does it freeze in East Merrimack?
Frost typically leaves East Merrimack by mid-May and returns to East Merrimack near mid-October.
What is the rainy season in East Merrimack?
Rainfall in East Merrimack peaks in October near 4.7 inches, out of about 46 inches annually.
What is the warmest month in East Merrimack?
The warmest stretch in East Merrimack comes in July, around 73°F on average.
What is the coldest month in East Merrimack?
On average January is the chilliest month in East Merrimack, about 24°F.
When can I start a vegetable garden in East Merrimack?
East Merrimack's last frost (mid-May) cues hardy greens; in East Merrimack, hold heat-lovers two weeks past.
How many rainy days does East Merrimack get?
Expect roughly 154 wet days a year in East Merrimack.
What hardiness zone is East Merrimack?
East Merrimack's USDA zone comes from its January mean (24°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for East Merrimack?
East Merrimack's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in East Merrimack?
See this week's day-by-day rain chances for East Merrimack in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in East Merrimack?
Current conditions for East Merrimack and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the East Merrimack forecast updated?
The East Merrimack forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in East Merrimack?
Today's sunrise and sunset times for East Merrimack are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for East Merrimack?
The next few days in East Merrimack's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

East Merrimack, New Hampshire has a warm-summer humid continental climate: January averages roughly 24°F, July about 73°F, 49°F between them.

In a typical year East Merrimack records about 46 inches of precipitation on around 154 days.

At 42.9°N, East Merrimack's 49°F summer-to-winter swing sets when East Merrimack's gardens wake and when frost returns.

All cities in New Hampshire →

Manchester, NH weather →

ZIP codes in East Merrimack

  • 03054

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.