Plainfield, New Jersey Climate by Month
Plainfield, New Jersey, United States
Hot summers and cold winters, with rain spread through the year.
Hot summers and cold winters, with rain spread through the year: that's Plainfield's climate in short. July is the warmest month, with highs around 86°F (30°C); January is the coolest at 39°F (4°C), and nights dip to 23°F (-5°C). It gets 49 in (1246 mm) of rain a year, spread across the months.
- Warmest month
- 86°F(30°C)
- Average high, July
- Coldest nights
- 23°F(-5°C)
- Average low, January
- Rain per year
- 49 in(1246 mm)
- No clear rainy season
- Humidity
- 66%
- Sunniest: July
Best and worst months in Plainfield
Best for weatherThe most comfortable weather comes in May and September, with highs around 75°F (24°C) and about 4.2 in (107 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 39°F (4°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 May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Plainfield weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 39°F(4°C) | 23°F(-5°C) | 3.7 in(94 mm) | 68% | 1.8 |
| FebFebruary | 43°F(6°C) | 24°F(-4°C) | 2.9 in(74 mm) | 62% | 2.7 |
| MarMarch | 51°F(11°C) | 31°F(-1°C) | 4.2 in(107 mm) | 58% | 3.7 |
| AprApril | 63°F(17°C) | 40°F(5°C) | 3.7 in(95 mm) | 62% | 4.6 |
| MayMayBest | 73°F(23°C) | 50°F(10°C) | 3.9 in(98 mm) | 65% | 5.3 |
| JunJune | 82°F(28°C) | 59°F(15°C) | 4.8 in(121 mm) | 67% | 5.7 |
| JulJuly | 86°F(30°C) | 64°F(18°C) | 5.1 in(130 mm) | 67% | 5.8 |
| AugAugust | 84°F(29°C) | 63°F(17°C) | 4.3 in(108 mm) | 71% | 5.0 |
| SepSeptemberBest | 78°F(25°C) | 56°F(13°C) | 4.6 in(116 mm) | 71% | 4.0 |
| OctOctober | 66°F(19°C) | 44°F(7°C) | 4.3 in(109 mm) | 67% | 2.8 |
| NovNovember | 55°F(13°C) | 35°F(2°C) | 3.5 in(90 mm) | 68% | 2.0 |
| DecDecember | 44°F(7°C) | 28°F(-2°C) | 4.1 in(104 mm) | 69% | 1.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Plainfield →- 🇺🇸LancasterPennsylvania, United States · Pop. 59k99%matchSame summer highsSame winter lowsPlainfield vs Lancaster →
- 🇺🇸AbingtonPennsylvania, United States · Pop. 55k99%matchSame summer highsSame winter lowsPlainfield vs Abington →
- 🇺🇸BridgeportConnecticut, United States · Pop. 148k99%matchSame winter lowsSame summer highsPlainfield vs Bridgeport →
- 🇺🇸ReadingPennsylvania, United States · Pop. 88k99%matchSame winter lowsSame summer highsPlainfield vs Reading →
- 🇺🇸AllentownPennsylvania, United States · Pop. 120k99%matchSame summer highsSame winter lowsPlainfield vs Allentown →