Climateby Month

North Conway, NH weather in September

NOAA 1991-2020 normals and daily records · North Conway all year

September in North Conway: mild, with frequent rain. Highs 72°F, lows 48°F, rain on about 11 days. A great month for outdoor plans.

Normal high
72°F
Normal low
48°F
Wet days
11
3.7 in total
Muggy days
1
dew point 65°F+

How September changes from start to finish

Normal values at the start and end of September
September 1September 30
Normal high78°F66°F
Normal low53°F42°F
Chance of a wet day33%38%
Sunrise / sunset6:07 am / 7:21 pm6:41 am / 6:27 pm
Daylight13.2 h11.8 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).

A typical September day

  1. 6 am55°Fdew point 51°F
  2. 9 am64°Fdew point 54°F
  3. Noon68°Fdew point 53°F
  4. 3 pm68°Fdew point 53°F
  5. 6 pm63°Fdew point 53°F
  6. 9 pm59°Fdew point 53°F

NOAA hourly normals (local standard time) from Portland Intl Jetport (50 mi away); average wind 7 mph.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F18 of 30
  • Hot dayshigh 90°F or more1 of 30
  • Muggy daysdaily mean dew point 65°F or more1 of 30
  • Wet daysat least 0.01 in of rain or melted snow11 of 30
  • Notable rainat least 0.10 in6 of 30
  • Freezing nightslow 32°F or below1 of 30
  • Snow on the groundsnow depth 1 in or more0 of 30

Average days per September, counted from daily records for each year 1991-2020.

Rain in September

Normal precipitation is 3.7 in; a dry September brings about 2.5 in and a wet one about 4.3 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.

How September varies from year to year

  • Warmest September, 1991-20202017: average high 77°F
  • Coolest September1997: average high 68°F
  • Wettest September1999: 10.6 in
  • Driest September2014: 0.8 in
  • Highest reading98°F (September 10, 2002)
  • Lowest reading25°F (September 30, 2000)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

September compared with August and October

AugustSeptemberOctober
Normal high80°F72°F59°F
Normal low56°F48°F37°F
Wet days111113
Comfortable days13187
Daylight14.0 h12.5 h11.0 h

Highs change by -8°F from August and -13°F into October.

Nearby alternatives in September

How North Conway ranks in September

  • Normal high325th warmest of 378 cities; 4th of 4 in New Hampshire
  • Wet days324th driest of 378
  • Comfortable days26th most of 342

What to pack for North Conway in September

  • A rain jacket or umbrella – rain on about 11 days

Heating and cooling

September has 184 heating degree days and 34 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.

Questions

How hot is North Conway in September?

The normal high is 72°F and the normal low is 48°F. From 1991 to 2020 the hottest September reading was 98°F (September 10, 2002).

Does it rain a lot in North Conway in September?

About 11 days in September have at least 0.01 in of precipitation, and the normal total is 3.7 in. The wettest September in 1991-2020 was in 1999 (10.6 in); the driest was in 2014 (0.8 in).

Is September a good time to visit North Conway?

September ranks 1st of 12 months on our comfort score for North Conway (73 out of 100). It has about 18 comfortable days and about 1 day at 90°F or hotter. The best months are May, June and September.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: N Conway (USC00275995), 0.2 mi NNW of the city center, 522 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Portland Intl Jetport (USW00014764), 50 mi SE of the city center, 45 ft (481 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: St. JOHNSBURY(AMOS) (726140-54742), 51 mi WNW of the city center, 697 ft (171 ft higher than the city). Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).