Islip, NY Snowfall B

First snow Dec 11 · Last snow Mar 19 · 32.1 in/yr · Station: ISLIP-LI MACARTHUR AP

Avg First Snow

Dec 11

Median over 30 seasons 3d late

Avg Last Snow

Mar 19

Median over 30 seasons

Snow Season

99 days

SepJun

Avg Annual Snowfall

32.1 in

Rank #122 of 217 tracked

Latest season (2025–26): first measurable snowfall arrived 3 days later than the 30-year normal.

Average Monthly Snowfall (inches)

Sep

Oct

0.4

Nov

5.4

Dec

9.7

Jan

9.5

Feb

6.3

Mar

0.7

Apr

May

Jun

How Islip Compares

Islip snowfall vs New York and U.S. medians
Measure	Islip	New York median	U.S. median
Avg annual snowfall	32.1 in	95.0 in	39.1 in
Avg first snowfall	Dec 11	Nov 9	Nov 16
Avg last snowfall	Mar 19	Apr 8	Apr 3
Snow season length	99 days	152 days	139 days

Medians are taken across tracked cities with regular snowfall (9 in New York, 201 nationally).

Nearby Tracked Cities

Ski Resorts in New York

Data source: NOAA GHCN-Daily records for ISLIP-LI MACARTHUR AP (USW00004781), 12 km from the city center, accessed via the ACIS web service. Normals window: 1990–91 through 2019–20 snow seasons. Measurable snow = ≥ 0.1 in.