Iselin Weather in December
December in Iselin averages 8°C (46°F) during the day and -1°C (30°F) at night. It is the wettest month of the year, with 128 mm (5 in) of snow/rainfall on average, so waterproof gear is a must.
Rainfall in Iselin in December
With the most rainfall occurring this month, it's practical to keep an umbrella handy for sudden downpours. Climate statistics over the past 30 years suggest around 11 days of snow/rain, with 128 mm (5 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Iselin in December
December in Iselin brings low temperatures, with highs of 8°C (46°F) and nights around -1°C (30°F). Winter occurs in December. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. With lows of -1°C (30°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated.
Sunshine in Iselin in December
The city usually sees around 141 hours of sunlight, indicating a moderately sunny period.Our weather planner can help you find worldwide destinations with pleasant weather during this period. September typically offers the best weather for Iselin.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Iselin's climate page.
Iselin Temperature in December
Min Temperature
-1°C (30°F)
Max Temperature
8°C (46°F)
Chance of Rain
37%
Precipitation
128 mm (5 in)
Rainy days
11 days
Humidity
64% *
Sunshine
141 hours *
Percentage Sunshine
48% *
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Iselin in December
We recommend to layer up for chilly conditions in Iselin in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Iselin in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Iselin's climate page.
Temperature Rainfall Sunshine Humidity
See the full Iselin climate overview or explore weather in the United States of America.
