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Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C. What is the warmest city in September in New Hampshire? Nashua tops the warmest city list in our database with average maximum daytime temperatures around 24°C and a minimum nighttime temperature of around 11°C .
- Weather in New Hampshire
- Is It Safe to Travel to New Hampshire?
- The Busiest and Least Crowded Months
Temperature
Average temperatures in New Hampshire vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 26th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmesttime to visit New Hampshire, the hottest months are July, August, and then June....
Precipitation
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in New Hampshire are January, November, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid to late September. For example, on the week of September 17th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid June with an average of 2 days...
Humidity and Wind
New Hampshire has some high humidity months, with other comfortably humid months. The least humid month is April (51.5% relative humidity), and the most humid month is September (68.4%). Wind in New Hampshire is usually calm. The windiest month is March, followed by February and January. March’s average wind speed of around 7.9 knots (9.1 MPH or 14.7 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highe...
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.
The busiest month for tourism in New Hampshire, United States is June, followed by August and September. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit New Hampshire in November. Those willing to visit at these times will likely find it th...
New Hampshire has a mix of continental climates (wet continental climate type Dfb and an alpine climate on the highest peaks of the White Mountains) In the lower situated areas winters are cool and summers are warm. During the summer temperatures may rise above 30 degrees Celsius (86 degrees Fahrenheit).
September Weather in Concord New Hampshire, United States. Daily high temperatures decrease by 11°F, from 76°F to 65°F, rarely falling below 56°F or exceeding 85°F. Daily low temperatures decrease by 10°F, from 56°F to 46°F, rarely falling below 35°F or exceeding 66°F.
Observed annual number of very cold nights (minimum temperature of 0°F or lower) for New Hampshire from 1950 to 2020. Dots show annual values. Bars show averages over 5-year periods (last bar is a 6-year average). The horizontal black line shows the long-term (entire period) average for New Hampshire of 25 nights.
Weather conditions in January in Rochester, New Hampshire, USA, present the height of winter, complete with snowfall and chilly temperatures. The cold is punctuated by an average highest temperature of a frosty 29.7°F (-1.3°C) and a lowest average temperature of 17.4°F (-8.1°C), while 6.26" (159mm) of snow typically graces the city.
