Merrimack climate

Merrimack Weather in July

NOAA 1991-2020 normals for Nashua 2 Nnw, 8.3 km from Merrimack

Average highs run from 83°F on July 1 to 84°F on July 31, and lows from 60°F to 61°F. Normal precipitation for the month is 3.65 in over about 10 wet days.

July day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Merrimack, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
84°F
Average low
61°F
Precipitation
3.65 in
Record high
103°FJul 22, 2011
Record low
46°FJul 17, 1954
Chance of a freeze
0%
Days of 90°F or more
6.4
Daylight
15 h 17 min to 14 h 32 min
Cloud cover
59%
Humidity
77%
Dew point
62°F
Wind
3.8 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Jul 183°F60°F95°F 201850°F 195233%0%
Jul 283°F60°F97°F 202650°F 200733%0%
Jul 383°F60°F98°F 200248°F 200133%0%
Jul 483°F61°F97°F 194952°F 195333%0%
Jul 583°F61°F99°F 201051°F 195333%0%
Jul 684°F61°F99°F 201053°F 200133%0%
Jul 784°F61°F95°F 201050°F 195133%0%
Jul 884°F61°F96°F 202449°F 194933%0%
Jul 984°F61°F94°F 195550°F 195433%0%
Jul 1084°F61°F96°F 202448°F 195333%0%
Jul 1184°F62°F95°F 202447°F 195333%0%
Jul 1284°F62°F93°F 202350°F 199933%0%
Jul 1384°F62°F93°F 201654°F 200033%0%
Jul 1484°F62°F98°F 195251°F 199933%0%
Jul 1584°F62°F97°F 202455°F 200133%0%
Jul 1684°F62°F97°F 202449°F 195433%0%
Jul 1784°F62°F97°F 199946°F 195433%0%
Jul 1884°F62°F95°F 195357°F 195433%0%
Jul 1984°F62°F98°F 202052°F 202533%0%
Jul 2084°F62°F97°F 201951°F 202633%0%
Jul 2184°F62°F97°F 195547°F 196633%0%
Jul 2284°F62°F103°F 201149°F 202533%0%
Jul 2384°F62°F100°F 195254°F 200033%0%
Jul 2484°F62°F98°F 202252°F 194933%0%
Jul 2584°F62°F94°F 202550°F 195333%0%
Jul 2684°F62°F93°F 195549°F 202633%0%
Jul 2784°F62°F96°F 194950°F 202633%0%
Jul 2884°F62°F97°F 194951°F 200133%0%
Jul 2984°F62°F100°F 202552°F 195333%0%
Jul 3084°F61°F99°F 194954°F 195233%0%
Jul 3184°F61°F93°F 195453°F 195533%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Merrimack, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

July 1
sunrise 5:11 AM, sunset 8:28 PM
July 31
sunrise 5:36 AM, sunset 8:08 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00275712 (Nashua 2 Nnw), public domain. Records: NOAA GHCN-Daily, station USW00014710, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.