Merrimack Weather Forecast
- 64
- 85
Mostly Sunny
- 71
- 93
Mostly Sunny
- 70
- 97
Rain Showers Likely
- 63
- 84
Slight Chance Thunderstorms
- 64
- 84
Chance Rain Showers
- 64
- 87
Slight Chance Rain Showers
Today 23 Jul Eastern Hillsborough
Mostly sunny. Highs in the mid 80s. Light and variable Winds.
Tonight 23 Jul Eastern Hillsborough
Mostly clear. Lows in the mid 60s. Light and variable Winds.
Merrimack Temperature Statistics
July Temperature
Manchester Airport (5 miles)
Lowest 5 July, 2025
52.6 °FAverage July
76.2 °FHighest 16 July, 2025
96.7 °F
Climate (2020–Present)
Manchester Airport (5 miles)
Average Low 2020–2025
43 °FAverage 2020–2025
52.6 °FAverage High 2020–2025
62 °F