Newark, NJ weather in September
September in Newark: mild, with some rain. Highs 78°F, lows 61°F, about 9 days with rain. A good month for most outdoor plans.
- Normal high
- 78°F
- Normal low
- 61°F
- Wet days
- 9
- 3.8 in total
- Muggy days
- 6
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 82°F | 72°F |
| Normal low | 65°F | 55°F |
| Chance of a wet day | 28% | 30% |
| Sunrise / sunset | 6:23 am / 7:29 pm | 6:52 am / 6:41 pm |
| Daylight | 13.1 h | 11.8 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
- 6 am63°Fdew point 57°F
- 9 am69°Fdew point 57°F
- Noon75°Fdew point 56°F
- 3 pm76°Fdew point 56°F
- 6 pm73°Fdew point 57°F
- 9 pm69°Fdew point 58°F
NOAA hourly normals (local standard time) from Newark Intl Airport (4 mi away); average wind 9 mph; clear or few clouds in 58% of daytime hours, mostly cloudy or overcast in 34%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F14 of 30
- Hot dayshigh 90°F or more2 of 30
- Muggy daysdaily mean dew point 65°F or more6 of 30
- Wet daysat least 0.01 in of rain or melted snow9 of 30
- Notable rainat least 0.10 in6 of 30
- Freezing nightslow 32°F or below0 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 3.8 in; a dry September brings about 2.2 in and a wet one about 5.3 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, 1991-20202005: average high 83°F
- Coolest September2006: average high 75°F
- Wettest September1999: 9.4 in
- Driest September2005: 0.5 in
- Highest reading100°F (September 3, 1993)
- Lowest reading42°F (September 29, 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
| August | September | October | |
|---|---|---|---|
| Normal high | 85°F | 78°F | 66°F |
| Normal low | 68°F | 61°F | 49°F |
| Wet days | 10 | 9 | 9 |
| Comfortable days | 3 | 14 | 14 |
| Daylight | 13.8 h | 12.5 h | 11.1 h |
Highs change by -7°F from August and -12°F into October.
Nearby alternatives in September
- Cooler: Worcester, MA162 mi · high 71°F · 10 wet days
How Newark ranks in September
- Normal high229th warmest of 378 cities; 3rd of 3 in New Jersey
- Wet days228th driest of 378
- Comfortable days114th most of 342
What to pack for Newark in September
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
September has 33 heating degree days and 159 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Newark in September?
The normal high is 78°F and the normal low is 61°F. From 1991 to 2020 the hottest September reading was 100°F (September 3, 1993).
Does it rain a lot in Newark in September?
About 9 days in September have at least 0.01 in of precipitation, and the normal total is 3.8 in. The wettest September in 1991-2020 was in 1999 (9.4 in); the driest was in 2005 (0.5 in).
Is September a good time to visit Newark?
September ranks 2nd of 12 months on our comfort score for Newark (66 out of 100). It has about 14 comfortable days and about 2 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Newark Intl Airport (USW00014734), 3.7 mi S of the city center, 7 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Teterboro Airport (USW00094741), 9.8 mi NE of the city center, 9 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Newark Liberty International Airport (725020-14734), 3.6 mi S of the city center, 7 ft . Hourly observations, 1991-2020.