Snow totals Islip, NY
As of October 8, 2026, Islip has recorded no snowfall for the 2026-27 season. The normal amount of snow that would have fallen by this date is 0.0 inches, while the full-season average for the city is 29.2 inches. The reading is a station observation from Islip Long Island MacArthur Airport in the GHCN-Daily network. NOAA quality-checks the reading.
as of
Data from Islip Long Island MacArthur Airport, with records back to 1963. 100 percent of days since 1963 carry a reading, and the 2025-26 season reached 100 percent.
Most recent snowfall
2026-27 has produced no measurable snow at this station so far.
How much snow did Islip get?
| Snowfall to date | 0.0 inches | 2026-27 |
|---|---|---|
| Normal to date | 0.0 inches | 1991-2020 normal through October 8, 2026 |
| Snow days | 0 | days with measurable snowfall |
| Biggest day | n/a | |
| Last snow day | n/a | |
| Season average | 29.2 inches | 63 seasons on record |
In Islip, the median first measurable snow lands on December 14, GHCN-Daily records show. The earliest date on record is October 29 and the latest is February 4, a span that starts in 1963. The median first inch lands on December 21, with the earliest on November 7 and the latest on February 27.
Islip snow season totals
| Season | Snowfall | Snow days |
|---|---|---|
| 2025-26 | 61.8 inches | 19 |
| 2024-25 | 11.7 inches | 10 |
| 2023-24 | 10.9 inches | 6 |
| 2022-23 | 5.0 inches | 6 |
| 2021-22 | 37.0 inches | 10 |
| 2020-21 | 33.5 inches | 14 |
| 2019-20 | 6.8 inches | 9 |
| 2018-19 | 12.8 inches | 11 |
| 2017-18 | 65.9 inches | 18 |
| 2016-17 | 39.3 inches | 11 |
| 2015-16 | 41.4 inches | 10 |
| 2014-15 | 63.7 inches | 22 |
| 2013-14 | 63.7 inches | 24 |
| 2012-13 | 46.9 inches | 23 |
| 2011-12 | 4.7 inches | 5 |
Station observations from GHCN-Daily, with a 1 to 3 day lag and quality checks.
Snowfall days at each threshold in Islip
| Season | 1+ in. | 3+ in. | 5+ in. | 10+ in. |
|---|---|---|---|---|
| 2025-26 | 9 | 5 | 5 | 2 |
| 2024-25 | 4 | 1 | 0 | 0 |
| 2023-24 | 3 | 2 | 0 | 0 |
| 2022-23 | 2 | 0 | 0 | 0 |
| 2021-22 | 5 | 3 | 2 | 1 |
| 2020-21 | 7 | 4 | 3 | 1 |
| 2019-20 | 3 | 0 | 0 | 0 |
| 2018-19 | 5 | 1 | 0 | 0 |
| 2017-18 | 12 | 7 | 5 | 2 |
| 2016-17 | 8 | 5 | 2 | 1 |
| Average | 7.7 | 3.5 | 1.6 | 0.4 |
A day counts when its snowfall total meets or passes the column amount, from Islip Long Island MacArthur Airport records in GHCN-Daily. The final row averages all 63 complete seasons, running from 1963 onward.
All-time snowfall records
| Biggest day | 23.5 inches | Jan 29, 2022 |
|---|---|---|
| Snowiest season | 77.1 inches | 1995-96 |
| Least snowy season | 2.6 inches | 1997-98 |
| Average season | 29.2 inches | 63 seasons on record |
| Record begins | 1963 | 23,023 daily readings |
Monthly snowfall normals
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inches | 10.3 | 9.4 | 6.5 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 4.5 |
Normals, the 1991-2020 average, come from NCEI.
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