Weather
Manchester, NH Weather: Chilly Nights Return October 20-22
Manchester, NH – Southern New Hampshire residents can expect another stretch of chilly October nights beginning Tuesday, October 20, as daytime warmth gives way to temperatures falling into the 30s af
By Jenna Hartley · 2026-10-17T23:39:46.654Z
Manchester, NH – Southern New Hampshire residents can expect another stretch of chilly October nights beginning Tuesday, October 20, as daytime warmth gives way to temperatures falling into the 30s after sunset. Manchester and surrounding Hillsborough County communities are forecast to experience mostly sunny afternoons, but overnight readings could approach freezing by Wednesday morning's following overnight period, making temperature changes the primary weather concern.
According to the National Weather Service forecast for Manchester, Tuesday should bring mostly sunny skies and a high near 63 degrees before temperatures fall to approximately 36 degrees Tuesday night. Wednesday's high is expected to reach 57 degrees, followed by an overnight low near 34 degrees early Thursday, October 22. The forecast highlights a significant difference between daytime and nighttime temperatures across southern New Hampshire.
Temperatures Approach Freezing Overnight The cooler nighttime pattern follows an even colder start to the weekend. Saturday night's forecast calls for clear skies and a low near 26 degrees, well below the freezing mark of 32 degrees.
Sunday should bring a rebound to approximately 56 degrees, followed by a nighttime low around 33 degrees. Monday temperatures are expected to reach 60 degrees before cooling to around 36 degrees overnight.
While the available forecast does not establish a new frost or freeze warning, overnight temperatures in the 30s could allow frost to develop in colder, sheltered locations if conditions are favorable.
Five Day Southern New Hampshire Weather Outlook Tuesday, October 20: Mostly sunny skies are forecast for Manchester, with temperatures reaching approximately 63 degrees before dropping to around 36 degrees overnight under mostly clear conditions.
Wednesday, October 21: Sunshine should continue, although afternoon temperatures are expected to reach only 57 degrees before falling to approximately 34 degrees Wednesday night beneath partly cloudy skies.
Thursday, October 22: Mostly sunny conditions are expected with a high near 59 degrees, followed by partly cloudy nighttime weather and temperatures around 39 degrees.
Friday, October 23: Another mostly sunny afternoon is forecast, with temperatures reaching approximately 58 degrees before falling to around 37 degrees overnight under partly cloudy skies.
Saturday, October 24: Mostly sunny skies should continue across Manchester, with afternoon temperatures reaching approximately 56 degrees, maintaining the cooler autumn pattern.
What Residents Should Know The combination of mild afternoons and cold nights may be especially noticeable for early morning commuters, outdoor workers and residents spending extended periods outside after sunset.
Gardeners should monitor overnight temperatures closely, particularly in low lying areas where colder air can collect. Sensitive plants may need protection when temperatures approach freezing.
Drivers traveling along Interstate 93, Interstate 293 and Route 101 are not facing a specific weather related disruption in the supplied forecast.
Extended Outlook: October 25 26 The available National Weather Service forecast extends through Saturday, October 24. Specific temperatures, precipitation chances and sky conditions for Sunday, October 25, and Monday, October 26, are not provided.
Residents should continue monitoring updated forecasts as the following week approaches.
For now, the most notable development is the contrast between Tuesday's anticipated high near 63 degrees and Wednesday night's low around 34 degrees, emphasizing the arrival of increasingly chilly autumn nights across southern New Hampshire.