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Topics / Climate / United States / New Jersey

Was September normal in New Jersey?

September 2026 · 21 counties · data family: climatedata.dev

Much warmer than normal

68.2°FStatewide average temperature, September 2026

Every New Jersey county, September 2026September 2026 was warmer than normal in every county with a figure: 7 much warmer, 14 warmer; furthest above normal Cape May County (+2.1°F), least Hudson County (+0.5°F).Choose a county to see its answer. The colour shows how far each county was from its own 1991–2020 normal.
Indicator: Monthly average temperature minus the county's 1991–2020 normal for September, °F (NOAA nClimDiv via climatedata.dev); words from each county's rank in its own recordSource: climatedata.dev us-climate, version 2026-10-25.6c7474e6d8; boundaries: U.S. Census Bureau TIGERweb, counties (generalised), EPSG:5070 (CONUS Albers equal-area)
Every September since 1895, New Jersey statewideSeptember 2026 averaged 68.2°F, +1.3°F against the 1991–2020 normal: the 13th warmest September of 132 since 1895.
60.062.565.067.570.072.51900192019401960198020002020normal 66.9°F2026: 68.2°F
Indicator: Monthly average temperature, °F (NOAA nClimDiv via climatedata.dev); normal = NOAA's 1991–2020 normal for that monthSource: climatedata.dev us-climate, version 2026-10-25.6c7474e6d8; NOAA Monthly U.S. Climate Divisional Database (nClimDiv), statewide and national files; climatedata.dev county-climate, version 2026-10-25.b4bbb5298a
Show the numbers (132 rows)
YearSeptember average
202668.2°F
202568.0°F
202466.8°F
202368.0°F
202267.6°F
202168.7°F
202066.8°F
201969.0°F
201870.2°F
201768.2°F
201669.7°F
201570.7°F
201466.9°F
201364.4°F
201267.0°F
201168.9°F
201069.2°F
200964.7°F
200867.4°F
200768.0°F
200664.3°F
200570.2°F
200467.6°F
200366.9°F
200267.8°F
200164.8°F
200064.4°F
199967.2°F
199868.2°F
199764.4°F
199666.2°F
199565.5°F
199464.2°F
199365.1°F
199264.8°F
199164.8°F
199063.9°F
198966.0°F
198863.4°F
198765.4°F
198664.5°F
198566.7°F
198462.6°F
198366.7°F
198264.4°F
198164.4°F
198068.2°F
197965.2°F
197863.4°F
197766.6°F
197663.7°F
197562.2°F
197464.4°F
197366.5°F
197265.9°F
197167.9°F
197067.8°F
196965.2°F
196866.4°F
196762.7°F
196663.2°F
196566.5°F
196465.3°F
196361.0°F
196261.4°F
196170.8°F
196065.1°F
195968.1°F
195864.2°F
195766.7°F
195662.6°F
195564.6°F
195465.1°F
195366.1°F
195265.1°F
195164.7°F
195061.7°F
194962.7°F
194865.3°F
194765.9°F
194666.4°F
194567.9°F
194465.9°F
194363.8°F
194265.2°F
194166.7°F
194062.3°F
193965.2°F
193862.6°F
193762.2°F
193665.8°F
193562.4°F
193466.2°F
193367.0°F
193265.4°F
193169.6°F
193068.6°F
192966.0°F
192861.4°F
192764.6°F
192663.6°F
192566.8°F
192460.8°F
192365.5°F
192265.5°F
192169.1°F
192065.6°F
191964.7°F
191860.9°F
191760.2°F
191663.9°F
191567.1°F
191462.7°F
191363.4°F
191264.9°F
191165.2°F
191065.9°F
190963.0°F
190864.4°F
190765.6°F
190667.5°F
190564.2°F
190463.5°F
190363.7°F
190263.5°F
190165.4°F
190068.1°F
189962.8°F
189866.9°F
189763.9°F
189663.5°F
189568.1°F

All 21 counties, September 2026

Record rank: 1 is the warmest September on record for that county.

1Cape May70.8°F+2.1°F9 of 132Much warmer than normal
2Cumberland70.4°F+1.9°F12 of 132Much warmer than normal
3Atlantic70.0°F+1.8°F10 of 132Much warmer than normal
4Salem70.6°F+1.8°F12 of 132Much warmer than normal
5Monmouth69.3°F+1.5°F12 of 132Much warmer than normal
6Ocean69.3°F+1.5°F13 of 132Much warmer than normal
7Gloucester70.1°F+1.4°F19 of 132Warmer than normal
8Mercer68.7°F+1.4°F14 of 132Warmer than normal
9Middlesex69.0°F+1.4°F13 of 132Much warmer than normal
10Camden69.6°F+1.2°F21 of 132Warmer than normal
11Hunterdon66.5°F+1.2°F18 of 132Warmer than normal
12Somerset67.6°F+1.2°F17 of 132Warmer than normal
13Burlington69.2°F+1.1°F20 of 132Warmer than normal
14Warren64.8°F+1.1°F23 of 132Warmer than normal
15Union68.4°F+0.9°F19 of 132Warmer than normal
16Morris65.2°F+0.8°F25 of 132Warmer than normal
17Essex67.6°F+0.7°F25 of 132Warmer than normal
18Passaic65.4°F+0.7°F24 of 132Warmer than normal
19Bergen67.2°F+0.6°F27 of 132Warmer than normal
20Sussex63.6°F+0.6°F29 of 132Warmer than normal
21Hudson69.0°F+0.5°F30 of 132Warmer than normal

Get this data

This page's numbers, as JSON:

curl https://visualizedata.org/data/topics/climate/us-nj.json

The climatedata.dev API it comes from (live, no key; every month since 1895 with its normal, anomaly and rank):

curl "https://api.climatedata.dev/v1/us-climate/tavg/us-nj.json"

Open the JSON

What this can't tell you

  • A statewide average is not the average of its counties: NOAA computes it from its own grid, weighted by area.
  • The most recent months are preliminary and NOAA revises them in the next release.

How the answer is decided

Each month is ranked against the same month in every year on record (since 1895 for most places). The top tenth of the record is 'much warmer than normal', the top third 'warmer', the middle third 'near normal'. Counties are coloured by the same five words.

Sources

Every topic for one county: How's Hennepin County?