Nashua weather in July

In July, Nashua sees average daytime highs of 82°F and overnight lows near 64°F, with 3.4 in of rain across 10.3 wet days and about 14.8 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 25% of the time in July, and the air most often feels humid.

Daylight stretches from about 15 h 06 min at the start of July to 14 h 24 min by month's end. Set against the rest of the year, July is Nashua's 8th-clearest and 11th-windiest month. For the whole year in context, see Nashua's year-round climate.

Daytime high
82°
1st warmest
Overnight low
64°
12th coldest
Rainfall
3.4 in
10.3 wet days
Daylight
14 h 54 min
4:26 AM – 7:17 PM
Cloud cover
60%
8th clearest
Wind
6 mph
11th windiest
Solar energy
5.88 kWh/m²
Travel score
6.0
out of 10

Nashua is city in southern New Hampshire, United States.

Density
1,065/km²
people per km²
Founded
1746

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 82°F through the month.

A typical July day in Nashua reaches about 82°F in the afternoon and slips back to 64°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 92°F. Set against its neighbours, July runs about 6°F warmer than June and about 2°F warmer than August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18162
28262
38263
48263
58263
68263
78263
88263
98263
108263
118264
128364
138364
148364
158364
168364
178364
188364
198364
208364
218364
228364
238364
248364
258264
268264
278264
288264
298264
308264
318264

How July really feels in Nashua

Once humidity and wind are folded in, July averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Nashua weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan34° / 19°3.19.66.79.20.0
Feb36° / 20°3.08.4610.30.0
Mar44° / 28°4.110.95.411.60.8
Apr57° / 39°3.710.51.513.13.8
May67° / 48°3.210.8014.46.0
Jun77° / 58°3.510.8015.16.5
Jul82° / 64°3.410.3014.86.0
Aug80° / 62°3.49.6013.76.6
Sep73° / 54°3.48012.37.0
Oct61° / 44°3.89.30.310.85.1
Nov49° / 34°3.49.41.49.62.0
Dec39° / 25°4.110.35.58.90.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 24% of July, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24852
34951
45050
55050
65050
75149
85149
95248
105248
115248
125248
135149
145149
155149
165050
175050
184951
194852
204753
214753
224753
234753
244654
254654
264753
274753
284753
294753
304951
314951

Chance of precipitation in July

Any precipitation

Nashua gets around 3.4 in of rain over 10.3 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
235
335
435
534
634
733
833
933
1032
1132
1233
1333
1433
1533
1633
1734
1834
1934
2035
2135
2235
2335
2435
2535
2636
2736
2836
2936
3035
3135

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the humid band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 25% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1302524174
2292624174
3292624174
4282624174
5282725174
6272725174
7272725184
8262726184
9262626184
10252627194
11242528194
12242528194
13232529204
14232429204
15232430204
16222330204
17222330215
18212231215
19212232215
20202132215
21192132225
22192232225
23192232225
24182232225
25182232225
26182332226
27182331226
28182331226
29182331226
30192330226
31192330226

Wind in July

Winds average 6 mph in July.

Across July, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 06 min at the start of July to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 4:16 AM to 4:40 AM, and sunset from 7:23 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.14:167:23
215.14:167:22
315.14:177:22
415.14:177:22
515.14:187:22
615.14:197:22
715.04:197:21
815.04:207:21
915.04:207:21
1015.04:217:20
1115.04:227:20
1214.94:237:19
1314.94:237:19
1414.94:247:18
1514.94:257:18
1614.94:267:17
1714.84:277:17
1814.84:277:16
1914.84:287:15
2014.84:297:14
2114.74:307:14
2214.74:317:13
2314.74:327:12
2414.64:337:11
2514.64:347:10
2614.64:357:09
2714.54:367:08
2814.54:377:07
2914.54:387:06
3014.44:397:05
3114.44:407:04

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.88 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.58 kWh/m² to a high of 5.88 kWh/m² in July across the year — July's 5.88 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.0Intense
96.0Intense
106.0Intense
116.0Bright
126.0Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.5Bright
315.5Bright
Planning a trip in July

Hazard calendar for Nashua

In seasonPeak

In July, Nashua sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Nashua sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Nashua?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.0
Sightseeing
4th-best month of the year
6.7
Beach & pool
1st-best month of the year

July is a reasonable time to visit Nashua for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Nashua in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Nashua sees daytime highs around 82°F and nights near 64°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Nashua in July

The nearest coast averages about 65°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 40 mi away) is warmest in August at about 66°F and coldest in February near 38°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°F)Comfort
Jan41Bracing
Feb38Bracing
Mar38Bracing
Apr42Bracing
May50Bracing
Jun58Bracing
Jul65Cool
Aug66Cool
Sep63Cool
Oct56Bracing
Nov50Bracing
Dec46Bracing

UV index in Nashua in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nashua peaks around July 10 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighHighModerateLowJul 10UV 7Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr5High
May7Very high
Jun7High
Jul7Very high
Aug5Moderate
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Nashua in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Nashua is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1715 µg/m³Nov 188 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar13Moderate
Apr13Moderate
May14Moderate
Jun13Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is Nashua?

Nashua sits at 42.8°N, 71.5°W, 161 ft above sea level, in United States. The nearest listed city is Merrimack, 6.8 mi away.

Topography around Nashua

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Nashua.

Within 2 miles, the terrain around Nashua has only modest variations in elevation — a maximum elevation change of 213 ft around an average of 174 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 804 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,176 ft.

The land around Nashua is covered by trees (50%) and artificial surfaces (34%) within 2 miles, trees (80%) within 10 miles, and trees (80%) within 50 miles.

2 miles
213 ft
10 miles
804 ft
50 miles
3,176 ft
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Merrimack 6.8 mi · Dracut 11 mi · Derry 11 mi · Derry Village 12 mi · Lowell 12 mi · Chelmsford 12 mi · Bedford 13 mi · Westford 13 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Nashua (42.7654°, -71.4676°, elevation 161 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).