As of Oct 13, 2026, the latest day this station has reported

How much rain has Nassau County, New York, had in 2026?

35.38 inches of rain have fallen so far in 2026 at the weather station in Syosset, Nassau County, through Oct 13. That is 1.41 inches less than a usual year to date (96% of usual).

Rain so far
35.38 in
Usual by Oct 13
36.79 in
Percent of usual
96%
2025 by Oct 13
27.06 in
Running total of rain in Nassau County, 2026, against a usual year0510152025303540JFMAMJJASOND2026Usual
Inches of rain added up day by day from Jan 1, solid line, against the usual year at this station (dashed), counted on the same days. Days with no report add nothing to either line.

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Prints of 2026 ship in January, once the full year is in.

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Month by month

Rain by month in Nassau County, New York, 2026
MonthRain, inUsual, inVs usual
Jan1.633.84−2.21
Feb 1 day not reported0.423.07−2.65
Mar 1 day not reported2.844.23−1.39
Apr2.654.42−1.77
May3.503.90−0.40
Jun 1 day not reported1.773.62−1.85
Jul6.633.90+2.73
Aug7.614.06+3.55
Sep6.594.12+2.47
Oct to the 13th1.741.63+0.11
So far35.3836.79−1.41

2026 so far in Nassau County

The station, and what usual means

The numbers come from NOAA’s daily record for the station in Syosset (station ID 308577), 8 miles from the middle of Nassau County. It reported 283 of the 286 days from Jan 1 to Oct 13; the 3 days with no report count as unknown, not as dry. Rain here means everything the gauge caught: rain, and snow melted down to water. A trace counts as zero. It is read once a day, usually in the morning, and each reading is filed under the day it was read, so an evening storm can show up on the next day.

Usual means NOAA’s 1991 to 2020 daily normals for this station, added up over the same 283 days the station reported, so a missing day counts on neither side.

Why this station: 7 stations inside Nassau County reported at least 90% of the days in 2026. Mountain snow sites, and stations far above the rest in the county, come last, since their rain is not what the farms below get. Then the pick goes to one with NOAA normals, then the most days reported, then the one nearest the middle of the county. Your own rain gauge can read differently a few miles away.

Questions

How much rain has Nassau County, New York, had in 2026?

35.38 inches of rain have fallen so far in 2026 at the weather station in Syosset, Nassau County, through Oct 13. That is 1.41 inches less than a usual year to date (96% of usual).

Is Nassau County wetter or drier than usual in 2026?

Drier so far. The weather station in Syosset had 35.38 inches from Jan 1 to Oct 13, 96% of the usual 36.79 inches for the same days.

What was the wettest month in Nassau County in 2026?

August, with 7.61 inches at the weather station in Syosset, counting Jan 1 through Oct 13.

What was the biggest rain in Nassau County in 2026?

2.87 inches on Aug 21, 2026, the most the gauge caught in one day this year through Oct 13.

How does 2026 compare with 2025 in Nassau County?

From Jan 1 to Oct 13, the weather station in Syosset had 27.06 inches in 2025 (2025 missed 4 days) and 35.38 inches in 2026 (2026 missed 3 days). On the 279 days both years reported, 2026 had 10.04 inches more than 2025.

Next door

Rain in New York, county by county · PRF insurance in Nassau County · Farmland Atlas: Nassau County