Wilmington, DE Snowfall B

First snow Dec 16 · Last snow Mar 14 · 20.3 in/yr · Station: WILMINGTON AIRPORT

Avg First Snow

Dec 16

Median over 30 seasons 11d early

Avg Last Snow

Mar 14

Median over 30 seasons

Snow Season

89 days

SepJun

Avg Annual Snowfall

20.3 in

Rank #147 of 217 tracked

Latest season (2025–26): first measurable snowfall arrived 11 days earlier than the 30-year normal.

Average Monthly Snowfall (inches)

Sep

Oct

0.2

Nov

3.0

Dec

6.0

Jan

7.8

Feb

3.1

Mar

0.1

Apr

May

Jun

How Wilmington Compares

Wilmington snowfall vs Delaware and U.S. medians
Measure	Wilmington	Delaware median	U.S. median
Avg annual snowfall	20.3 in	16.7 in	39.1 in
Avg first snowfall	Dec 16	Dec 25	Nov 16
Avg last snowfall	Mar 14	Mar 5	Apr 3
Snow season length	89 days	71 days	139 days

Medians are taken across tracked cities with regular snowfall (2 in Delaware, 201 nationally).

Nearby Tracked Cities

Ski Resorts in Delaware

No tracked resorts — browse all→

Data source: NOAA GHCN-Daily records for WILMINGTON AIRPORT (USW00013781), 10 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.