Middletown, New Jersey Climate by Month
Middletown, New Jersey, United States
Warm summers and cold winters, with rain spread through the year.
Middletown has warm summers and cold winters, with rain spread through the year. July is the warmest month, with highs around 85°F (29°C); January is the coolest at 40°F (5°C), and nights dip to 25°F (-4°C). About 48 in (1219 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(29°C)
- Average high, July
- Coldest nights
- 25°F(-4°C)
- Average low, January
- Rain per year
- 48 in(1219 mm)
- No clear rainy season
- Humidity
- 67%
- Sunniest: July
Best and worst months in Middletown
Best for weatherThe most comfortable weather comes in May and September, with highs around 74°F (23°C) and about 3.9 in (98 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 40°F (5°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Middletown weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 40°F(5°C) | 25°F(-4°C) | 3.6 in(91 mm) | 64% | 1.8 |
| FebFebruary | 43°F(6°C) | 26°F(-3°C) | 3.1 in(79 mm) | 60% | 2.8 |
| MarMarch | 50°F(10°C) | 33°F(1°C) | 4.3 in(108 mm) | 67% | 3.7 |
| AprApril | 61°F(16°C) | 42°F(6°C) | 3.7 in(94 mm) | 61% | 4.6 |
| MayMayBest | 71°F(22°C) | 51°F(11°C) | 3.6 in(92 mm) | 65% | 5.4 |
| JunJune | 80°F(26°C) | 61°F(16°C) | 4.4 in(112 mm) | 71% | 5.8 |
| JulJuly | 85°F(29°C) | 67°F(19°C) | 4.6 in(118 mm) | 69% | 5.8 |
| AugAugust | 83°F(28°C) | 65°F(19°C) | 4.6 in(118 mm) | 73% | 5.1 |
| SepSeptemberBest | 76°F(25°C) | 58°F(15°C) | 4.1 in(104 mm) | 74% | 4.0 |
| OctOctober | 66°F(19°C) | 47°F(8°C) | 4.3 in(108 mm) | 71% | 2.9 |
| NovNovember | 55°F(13°C) | 38°F(3°C) | 3.5 in(90 mm) | 65% | 2.0 |
| DecDecember | 46°F(8°C) | 30°F(-1°C) | 4.1 in(105 mm) | 65% | 1.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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