September
September · June · July
79climate match
United States · 1991–2020
Best time to visit
Bloomingdale.
September leads for comfortable weather in Bloomingdale: typically 24°C by day, 9.8°C at night, with 88 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24°C
Typical low9.8°C
Rain in September88 mm
July
July · August · June
67climate match
May
May · September · June
72climate match
The weakest month is January, scoring 5 against September’s 79 — days reach only 0.2°C, 24° 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
50.2° / -8.9°
Feb
51.6° / -8.4°
Mar
57.3° / -4.4°
Apr
2814.6° / 1.1°
May
6021° / 7.3°
Jun
7426.4° / 12.7°
Jul
7428.4° / 14.7°
Aug
7227.6° / 14.1°
Sep
7924° / 9.8°
Oct
3816.7° / 3.8°
Nov
99.2° / -1.2°
Dec
53.1° / -5.5°
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 0.2°C | -8.9°C | 83 mm | 14.4 | 4.1°C | 9 h 24 | 5 | Strong coverage |
| February | 1.6°C | -8.4°C | 64 mm | 11.1 | 2.8°C | 10 h 29 | 5 | Strong coverage |
| March | 7.3°C | -4.4°C | 64 mm | 9.5 | 2.2°C | 11 h 48 | 5 | Strong coverage |
| April | 14.6°C | 1.1°C | 97 mm | 11.1 | 3.7°C | 13 h 18 | 28 | Strong coverage |
| May | 21°C | 7.3°C | 103 mm | 10.2 | 7.2°C | 14 h 34 | 60 | Strong coverage |
| June | 26.4°C | 12.7°C | 101 mm | 8.5 | 14.2°C | 15 h 16 | 74 | Strong coverage |
| July | 28.4°C | 14.7°C | 88 mm | 7 | 20.6°C | 14 h 59 | 74 | Strong coverage |
| August | 27.6°C | 14.1°C | 100 mm | 8.5 | 22.1°C | 13 h 54 | 72 | Strong coverage |
| September | 24°C | 9.8°C | 88 mm | 7.9 | 19.9°C | 12 h 26 | 79 | Strong coverage |
| October | 16.7°C | 3.8°C | 113 mm | 10.6 | 14.8°C | 10 h 59 | 38 | Strong coverage |
| November | 9.2°C | -1.2°C | 81 mm | 10.5 | 9.7°C | 9 h 43 | 9 | Strong coverage |
| December | 3.1°C | -5.5°C | 78 mm | 13.1 | 6.1°C | 9 h 05 | 5 | Strong coverage |
What has changed
Bloomingdale runs +0.7°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+1.1
Feb
+0.3
Mar
+0.4
Apr
-0.4
May
+0.3
Jun
+0.7
Jul
+0.5
Aug
+0.8
Sep
+1.4
Oct
+0.8
Nov
+0.2
Dec
+2.3
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 19.4°C25 Jan 1950 | -30.0°C18 Jan 1994 | 65 mm12 Jan 1960 | 156 mm2008 · driest 7 mm in 1920 | 113 |
| February | 21.7°C12 Feb 1999 | -30.6°C3 Feb 1996 | 56 mm21 Feb 1997 | 150 mm2018 · driest 2 mm in 1987 | 112 |
| March | 27.8°C22 Mar 1938 | -24.4°C7 Mar 1999 | 99 mm14 Mar 1918 | 155 mm2017 · driest 8 mm in 1910 | 112 |
| April | 31.7°C30 Apr 1942 | -15.0°C8 Apr 1972 | 119 mm19 Apr 1975 | 194 mm2009 · driest 0 mm in 1904 | 114 |
| May | 35.0°C30 May 2018 | -10.0°C14 May 1938 | 96 mm19 May 2000 | 221 mm2018 · driest 11 mm in 1950 | 112 |
| June | 37.2°C28 Jun 1934 | -0.6°C11 Jun 1972 | 112 mm21 Jun 1937 | 296 mm2010 · driest 10 mm in 1984 | 112 |
| July | 40.6°C5 Jul 1911 | 2.8°C20 Jul 1912 | 103 mm17 Jul 1982 | 238 mm1986 · driest 2 mm in 1916 | 114 |
| August | 40.0°C6 Aug 1918 | 0.6°C8 Aug 1929 | 116 mm13 Aug 2011 | 309 mm2011 · driest 9 mm in 1917 | 113 |
| September | 37.8°C15 Sep 1939 | -3.3°C27 Sep 1989 | 248 mm1 Sep 1914 | 372 mm1986 · driest 0 mm in 1979 | 112 |
| October | 31.7°C7 Oct 1939 | -8.9°C19 Oct 1972 | 92 mm15 Oct 2017 | 314 mm2017 · driest 7 mm in 1908 | 113 |
| November | 26.7°C1 Nov 1950 | -24.4°C25 Nov 1950 | 56 mm28 Nov 1990 | 195 mm1990 · driest 6 mm in 1904 | 114 |
| December | 21.7°C6 Dec 2001 | -27.8°C31 Dec 1976 | 68 mm3 Dec 1982 | 191 mm2008 · driest 16 mm in 1919 | 113 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 25 | 2 | 12 |
| February | 0 | 0 | 23 | 1 | 9 |
| March | <1 | 0 | 22 | 2 | 4 |
| April | 2 | <1 | 12 | 3 | 1 |
| May | 9 | 2 | 3 | 4 | 0 |
| June | 20 | 8 | 0 | 4 | 0 |
| July | 27 | 11 | 0 | 3 | 0 |
| August | 25 | 8 | 0 | 3 | 0 |
| September | 14 | 3 | <1 | 3 | 0 |
| October | 3 | <1 | 7 | 4 | <1 |
| November | <1 | 0 | 17 | 3 | 3 |
| December | 0 | 0 | 24 | 2 | 9 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 81); on 2011–2025 it is September (85). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 38% | 6% | 49% | -3.3–2.9°C |
| February | 0% | 34% | 5% | 42% | -2.0–4.3°C |
| March | 4% | 30% | 7% | 36% | 3.4–10.4°C |
| April | 16% | 32% | 10% | 40% | 11.7–17.2°C |
| May | 42% | 31% | 11% | 37% | 17.9–24.0°C |
| June | 67% | 27% | 11% | 27% | 24.0–28.4°C |
| July | 78% | 22% | 9% | 20% | 26.6–30.5°C |
| August | 75% | 24% | 9% | 22% | 25.7–29.4°C |
| September | 58% | 27% | 11% | 32% | 21.5–25.8°C |
| October | 24% | 29% | 10% | 35% | 14.3–19.1°C |
| November | 4% | 35% | 10% | 46% | 5.6–11.7°C |
| December | <1% | 38% | 7% | 50% | -1.0–5.1°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 4986442
- NOAA station
- USC00200864 · BLOOMINGDALE
- Station distance
- 0.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 26 usable years
- Daylight
- Calculated from latitude 42.38°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 34 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.