New Jersey · county records since 1895, through September 2026.
Weather › New Jersey › Monmouth County
8.4 inches fell in September, the 6th-most for a September in Monmouth County in 132 years. Monmouth County has warmed about 0.7° per decade since 1970.
That is the 1991 to 2020 average for these dates in Monmouth County. The Weather Service forecast fills in below.
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Each bar is a month's average temperature against the usual for that month (1991 to 2020). Ranks compare the same month in every year since 1895.
Rain and melted snow against the usual for each month. The drought reading is NOAA's Palmer index for the county.
| Month | Usual high / low | Usual rain | Warmest | Coldest |
|---|---|---|---|---|
| January | 42° / 24° | 3.6 in | 42.1° 2023 | 19.0° 1918 |
| February | 44° / 26° | 2.9 in | 40.8° 2017 | 16.4° 1934 |
| March | 51° / 32° | 4.3 in | 49.8° 2012 | 30.5° 1916 |
| April | 63° / 41° | 3.7 in | 55.8° 2010 | 44.0° 1907 |
| May | 72° / 51° | 4.0 in | 65.9° 1991 | 53.5° 1967 |
| June | 81° / 60° | 4.2 in | 74.7° 2024 | 63.1° 1903 |
| July | 86° / 66° | 4.6 in | 80.1° 2020 | 69.7° 1895 |
| August | 84° / 64° | 4.5 in | 78.6° 2022 | 66.6° 1927 |
| September | 78° / 58° | 4.0 in | 71.5° 2015 | 60.4° 1918 |
| October | 66° / 46° | 4.1 in | 63.0° 2007 | 48.2° 1925 |
| November | 56° / 37° | 3.4 in | 50.7° 2015 | 36.9° 1901 |
| December | 46° / 29° | 4.3 in | 49.2° 2015 | 24.3° 1989 |
Warmest and coldest are the month's whole-month average temperature, with the year it happened.
Crime Radar: Tinton Falls, Eatontown, Long Branch, Rumson, Point Pleasant, Oceanport, West Long Branch, Little Silver