Weather StoryAlmanac, microseasons, and the day's weather story.

Nashua, New Hampshire Weather

Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →

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

Nashua, NH
Saturday, July 4 at 4:12 PM
90
°
Clear
Feels like
91°
Humidity
41%
Wind
12 mph
Sunrise
1:13 AM
Sunset
4:27 PM
Nashua, NH
Hour by hour · 24h
24-Hour ForecastNashua, NH: 24-hour forecast. Temperatures range from 67 to 90 degrees Fahrenheit with a 43% chance of precipitation at 8 PM.
L 67°H 90°
Nashua, NH
7-day forecast
  1. Today
    Jul 4
    Rain
    43%
    0.13″
    90°73°—
  2. Sunday
    Jul 5
    Overcast
    —
    —
    85°67°-5°
  3. Monday
    Jul 6
    Light Drizzle
    51%
    0.02″
    74°61°-11°
  4. Tuesday
    Jul 7
    Rain
    64%
    0.91″
    60°58°-14°
  5. Wednesday
    Jul 8
    Overcast
    28%
    —
    74°57°+14°
  6. Thursday
    Jul 9
    Light Drizzle
    18%
    —
    91°60°+17°
  7. Friday
    Jul 10
    Light Drizzle
    45%
    0.02″
    86°67°-5°
Nashua, NH
Next 24 hours · Hot now
HOT 90°60°78°95°12p6p12a6anow 90°high 90°low 67°PRECIP %
Nashua, NH
Anemometer · 24h winds · from true
NESW
From · True
W
281° · veering 7°
Direction
W
281°
Sustained
12
mph
Gust
18
mph
Peak 24h
22
avg 7
Beaufort · 3 · GENTLE 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 7 · pk 22 @ 6:00p
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 244SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 7° from the w.
Nashua, NH
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1002.1
-1.1 mb in 3h · falling · 29.59 inHg
Now
1002.1
mb
3h
-1.1
mb
12h
-0.9
mb
24h
-0.9
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1002–1004
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1003.61002.11002.1
−24h−18h−12h−6hnow
Pressure giving way — clouds thicken and rain edges closer.
Nashua, NH
Air quality
46
AQI
Good
→+3 in 6h

AQI 46 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 44 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

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

PM 2.5Good
7.0μg/m³
PM 10Good
8μg/m³
NO₂Good
1μg/m³
OzoneDRIVERModerate
93μg/m³
UV IndexModerate
2.6

What's driving it

Ozone × UV × Sky

Ozone at AQI 44 — peak already passed at 1 PM under clear skies. Levels should ease through evening.

Present
AQI 44
UV peak
2.3 at earlier today
Sky at peak
clear
Projected peak
AQI 44

PM × Wind × Precip

PM2.5 at 7.0 µg/m³, PM10 at 7.7 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.91
Wind
breezy
Recent rain
0h in last 6h
Pattern
background

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 TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³370
Nashua, NH
Sky cover · visibility · 24h
Cloud cover
10%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
88.3mi
UNLIMITED
107 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
20:12 UTC · Nashua, 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
20:12 UTC · Nashua, NH · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Nashua, NH
Satellite · infrared · animated
Nashua, NH
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Nashua, NH
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:39 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.
Nashua, NH
The moon
Waning Gibbous
79% illuminated
Moonrise
10:44 PM
Moonset
9:45 AM
In sign
♓︎ Pisces
Nashua, NH
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Nashua at a glance

  • Today vs. normal: 21°F above the seasonal normal for this latitude
  • Last frost: May 2 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP codes: 03060, 03062, 03063, 03064

16-Day Forecast — Nashua

  1. Sat91°73°43%
  2. Sun85°69°4%
  3. Mon74°61°51%
  4. Tue60°58°64%
  5. Wed74°57°28%
  6. Thu91°60°18%
  7. Fri86°67°45%
  8. Sat82°66°31%
  9. Sun73°63°21%
  10. Mon70°63°31%
  11. Tue82°60°31%
  12. Wed85°59°28%
  13. Thu87°64°39%
  14. Fri91°64°31%
  15. Sat93°68°30%
  16. Sun87°73°33%

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

Live wind & temperature near Nashua

Right now in the garden

Peak growing season

As of July 4, 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 — Nashua

SPC has placed Nashua in the Marginal Risk category for severe thunderstorms today.

  • TODAYMRGLMarginal Risk
  • TOMORROWNONENo severe risk
  • DAY 3NONENo severe risk

Isolated severe storms possible. Limited threat for hail or damaging wind.

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 185 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 Nashua'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

Nashua swings from 24°F in January to 73°F in July (49°F) per NOAA NCEI 1991-2020 normals; precipitation in Nashua runs about 46.3 inches on roughly 154 measurable days.

Nashua'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 Nashua's rain calendar. It is a balanced pattern Nashua shares with places like East Merrimack, NH, Manchester, NH and Klondike Corner, NH.

Nashua reaches its last hard frost near late-May; that is the cue for kale, peas, spinach, and parsnips. Tomatoes and peppers do best set out two weeks later in Nashua, once nights clear the mid-40s°F. By early-October, frost is back in Nashua — protect or harvest anything tender. A creek-bottom lot in Nashua can lag Nashua's last frost 7-10 days behind a south slope.

Similar climates: East Merrimack, NH, Manchester, NH, Klondike Corner, NH, Pinardville, NH, New Boston, NH.

Naturalist notes

Late May brings the first ruby-throated hummingbirds to Nashua's gardens and feeders.

Apple trees reach full bloom across the area during the final weeks of May.

Frequently asked

When does it freeze in Nashua?
In Nashua, expect the last spring frost near mid-May; Nashua's first autumn frost comes around mid-October.
What is the rainy season in Nashua?
Rainfall in Nashua peaks in October near 4.7 inches, out of about 46 inches annually.
What is the warmest month in Nashua?
The warmest stretch in Nashua comes in July, around 73°F on average.
What is the coldest month in Nashua?
On average January is the chilliest month in Nashua, about 24°F.
When can I start a vegetable garden in Nashua?
Nashua's last frost (mid-May) cues hardy greens; in Nashua, hold heat-lovers two weeks past.
How many rainy days does Nashua get?
Nashua records around 154 days of measurable precipitation annually.
What hardiness zone is Nashua?
Nashua sits in the USDA zone set by January lows near 24°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Nashua?
Nashua'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 Nashua?
See this week's day-by-day rain chances for Nashua in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Nashua?
Current conditions for Nashua and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Nashua forecast updated?
The Nashua forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Nashua?
Today's sunrise and sunset times for Nashua 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 Nashua?
The next few days in Nashua's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Nashua's warm-summer humid continental climate in New Hampshire pairs 24°F Januarys with 73°F Julys, 49°F apart across the seasons.

Yearly precipitation in Nashua totals around 46 inches, spread over about 154 days of rain or snow.

The 49°F gap between Nashua's summer and winter, at 42.7°N, shapes Nashua's frost calendar.

All cities in New Hampshire →

Boston, MA weather →

ZIP codes in Nashua

  • 03062
  • 03063
  • 03060
  • 03064
  • 03061

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.