September
September · June · August
85climate match
United States · 1991–2020
Best time to visit
Middle Island.
September leads for comfortable weather in Middle Island: typically 24°C by day, 13.3°C at night, with 96 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24°C
Typical low13.3°C
Rain in September96 mm
July
July · August · June
72climate match
May
May · September · October
79climate match
The weakest month is January, scoring 5 against September’s 85 — days reach only 3.9°C, 20° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
53.9° / -5.8°
Feb
55.1° / -5.4°
Mar
58.7° / -1.7°
Apr
3014.6° / 3.6°
May
6120.1° / 9.2°
Jun
8025° / 14.7°
Jul
6828° / 18.1°
Aug
7027.4° / 17.3°
Sep
8524° / 13.3°
Oct
4717.7° / 6.9°
Nov
2312.1° / 1.3°
Dec
57.1° / -2.6°
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 3.9°C | -5.8°C | 112 mm | 9.8 | 3.9°C | 9 h 32 | 5 | Strong coverage |
| February | 5.1°C | -5.4°C | 101 mm | 8.5 | 2.0°C | 10 h 34 | 5 | Good coverage |
| March | 8.7°C | -1.7°C | 128 mm | 9.2 | 2.9°C | 11 h 49 | 5 | Good coverage |
| April | 14.6°C | 3.6°C | 121 mm | 9.8 | 6.7°C | 13 h 14 | 30 | Good coverage |
| May | 20.1°C | 9.2°C | 98 mm | 10 | 12.1°C | 14 h 26 | 61 | Good coverage |
| June | 25°C | 14.7°C | 115 mm | 8.8 | 17.6°C | 15 h 05 | 80 | Strong coverage |
| July | 28°C | 18.1°C | 101 mm | 7.9 | 21.7°C | 14 h 50 | 68 | Strong coverage |
| August | 27.4°C | 17.3°C | 109 mm | 7.6 | 22.8°C | 13 h 48 | 70 | Strong coverage |
| September | 24°C | 13.3°C | 96 mm | 7 | 21.6°C | 12 h 25 | 85 | Strong coverage |
| October | 17.7°C | 6.9°C | 126 mm | 8.2 | 17.9°C | 11 h 02 | 47 | Strong coverage |
| November | 12.1°C | 1.3°C | 98 mm | 8.1 | 12.8°C | 9 h 50 | 23 | Strong coverage |
| December | 7.1°C | -2.6°C | 129 mm | 9.8 | 7.9°C | 9 h 15 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.6°C30 Jan 2002 | -20.0°C4 Jan 2014 | 93 mm4 Jan 1999 | 224 mm1999 · driest 37 mm in 2025 | 31 |
| February | 21.1°C17 Feb 2023 | -21.7°C21 Feb 2015 | 123 mm9 Feb 2013 | 212 mm2013 · driest 6 mm in 1996 | 31 |
| March | 27.8°C30 Mar 1998 | -16.1°C1 Mar 2015 | 116 mm30 Mar 2014 | 310 mm2010 · driest 23 mm in 2006 | 31 |
| April | 34.4°C18 Apr 2002 | -8.3°C6 Apr 2016 | 85 mm23 Apr 2012 | 203 mm2004 · driest 46 mm in 2015 | 31 |
| May | 35.0°C21 May 1996 | -2.8°C20 May 2003 | 66 mm27 May 2003 | 197 mm1998 · driest 13 mm in 2015 | 31 |
| June | 36.1°C25 Jun 2025 | 2.8°C1 Jun 2001 | 121 mm8 Jun 2013 | 282 mm2003 · driest 24 mm in 1999 | 31 |
| July | 38.3°C6 Jul 1999 | 7.8°C11 Jul 2009 | 141 mm29 Jul 2012 | 217 mm2012 · driest 34 mm in 2015 | 31 |
| August | 38.3°C10 Aug 2001 | 7.2°C26 Aug 2004 | 112 mm12 Aug 1999 | 293 mm1999 · driest 18 mm in 2005 | 30 |
| September | 33.9°C2 Sep 2010 | 0.6°C30 Sep 2000 | 116 mm29 Sep 2004 | 231 mm2008 · driest 9 mm in 2024 | 30 |
| October | 31.7°C3 Oct 2019 | -3.9°C24 Oct 2008 | 175 mm15 Oct 2005 | 555 mm2005 · driest 3 mm in 2024 | 31 |
| November | 27.2°C1 Nov 2024 | -10.6°C23 Nov 2018 | 54 mm24 Nov 2006 | 239 mm2018 · driest 16 mm in 2001 | 31 |
| December | 25.0°C8 Dec 1998 | -16.1°C28 Dec 2004 | 102 mm12 Dec 2008 | 233 mm2009 · driest 13 mm in 1995 | 31 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 26 | 4 | 5 |
| February | 0 | 0 | 24 | 3 | 4 |
| March | <1 | 0 | 21 | 4 | 3 |
| April | <1 | <1 | 7 | 4 | <1 |
| May | 5 | <1 | <1 | 4 | 0 |
| June | 16 | 4 | 0 | 3 | 0 |
| July | 26 | 8 | 0 | 3 | 0 |
| August | 26 | 6 | 0 | 3 | 0 |
| September | 13 | 1 | 0 | 3 | 0 |
| October | 2 | <1 | 2 | 4 | 0 |
| November | 0 | 0 | 14 | 3 | <1 |
| December | 0 | 0 | 24 | 5 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 31% | 11% | 39% | 1.4–7.3°C |
| February | 0% | 31% | 12% | 39% | 1.8–7.6°C |
| March | 3% | 29% | 12% | 35% | 6.6–11.5°C |
| April | 13% | 32% | 12% | 40% | 12.7–16.2°C |
| May | 41% | 32% | 12% | 41% | 18.6–21.7°C |
| June | 67% | 28% | 9% | 31% | 23.3–26.3°C |
| July | 74% | 26% | 10% | 30% | 26.6–29.5°C |
| August | 75% | 25% | 10% | 26% | 26.0–28.9°C |
| September | 69% | 23% | 10% | 24% | 22.9–24.7°C |
| October | 27% | 26% | 11% | 28% | 16.7–19.7°C |
| November | 4% | 26% | 11% | 32% | 10.1–14.5°C |
| December | <1% | 32% | 15% | 41% | 4.8–10.0°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 5126787
- NOAA station
- USC00308721 · UPTON COOP - NWSFO NEW YORK
- Station distance
- 6.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 24 usable years
- Daylight
- Calculated from latitude 40.88°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 27 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.