October
October · April · May
United States · 1991–2020
October leads for comfortable weather in Hillside: typically 25.6°C by day, 9.5°C at night, with 20 mm of rain. Based on measured 1991–2020 NOAA station history.
October · April · May
July · September · June
November · April · March
The weakest month is January, scoring 38 against October’s 85 — days reach only 14.6°C, 9° below the 24°C the score treats as ideal, and nights drop to 0°C.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 14.6°C | 0°C | 57 mm | 4.2 | 10 h 05 | 38 | Strong coverage |
| February | 15.7°C | 0.7°C | 55 mm | 4.2 | 10 h 53 | 43 | Strong coverage |
| March | 19°C | 3.4°C | 43 mm | 3.9 | 11 h 52 | 61 | Strong coverage |
| April | 22.9°C | 6.4°C | 13 mm | 2 | 13 h | 81 | Strong coverage |
| May | 27.8°C | 11°C | 10 mm | 1.6 | 13 h 56 | 80 | Strong coverage |
| June | 33.5°C | 15.8°C | 5 mm | 0.7 | 14 h 26 | 67 | Strong coverage |
| July | 35.4°C | 20°C | 31 mm | 4 | 14 h 15 | 53 | Strong coverage |
| August | 34.6°C | 19.5°C | 57 mm | 6.1 | 13 h 26 | 51 | Strong coverage |
| September | 31.6°C | 15.8°C | 33 mm | 3.5 | 12 h 21 | 73 | Strong coverage |
| October | 25.6°C | 9.5°C | 20 mm | 1.9 | 11 h 16 | 85 | Strong coverage |
| November | 19.3°C | 3.7°C | 27 mm | 2.3 | 10 h 19 | 64 | Strong coverage |
| December | 14.2°C | -0.1°C | 39 mm | 3.4 | 9 h 52 | 40 | Strong coverage |
What has changed
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.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 28.3°C18 Jan 1971 | -12.8°C7 Jan 1971 | 74 mm22 Jan 2010 | 243 mm1993 · driest 0 mm in 2006 | 87 |
| February | 28.9°C18 Feb 1930 | -12.2°C4 Feb 2011 | 77 mm9 Feb 1993 | 205 mm1993 · driest 0 mm in 1972 | 90 |
| March | 33.9°C20 Mar 2026 | -8.3°C3 Mar 1966 | 78 mm1 Mar 1978 | 197 mm1991 · driest 0 mm in 1955 | 89 |
| April | 37.8°C26 Apr 2000 | -5.0°C6 Apr 2023 | 38 mm12 Apr 1941 | 116 mm1965 · driest 0 mm in 2000 | 90 |
| May | 38.9°C23 May 2000 | -0.6°C1 May 2010 | 39 mm4 May 1935 | 65 mm1993 · driest 0 mm in 1945 | 90 |
| June | 45.6°C25 Jun 1929 | 4.4°C14 Jun 2020 | 76 mm3 Jun 1952 | 76 mm1952 · driest 0 mm in 1950 | 90 |
| July | 43.3°C13 Jul 1939 | 10.6°C10 Jul 2015 | 64 mm6 Jul 1998 | 114 mm1990 · driest 0 mm in 1963 | 90 |
| August | 43.3°C12 Aug 1937 | 8.9°C15 Aug 1968 | 76 mm2 Aug 1964 | 205 mm1951 · driest 0 mm in 2002 | 89 |
| September | 42.2°C2 Sep 1950 | 3.9°C24 Sep 2017 | 118 mm26 Sep 1997 | 177 mm1997 · driest 0 mm in 1953 | 88 |
| October | 37.8°C1 Oct 2024 | -3.9°C30 Oct 1971 | 69 mm21 Oct 2004 | 185 mm2004 · driest 0 mm in 2020 | 88 |
| November | 31.1°C7 Nov 1934 | -7.8°C17 Nov 1958 | 76 mm29 Nov 2019 | 163 mm2019 · driest 0 mm in 1932 | 87 |
| December | 27.2°C7 Dec 1938 | -13.3°C23 Dec 1990 | 99 mm8 Dec 2009 | 150 mm1965 · driest 0 mm in 1930 | 87 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 17 | 2 |
| February | <1 | 0 | 12 | 2 |
| March | 3 | <1 | 6 | 1 |
| April | 11 | 2 | 1 | <1 |
| May | 23 | 11 | <1 | <1 |
| June | 28 | 25 | 0 | <1 |
| July | 30 | 29 | 0 | <1 |
| August | 30 | 27 | 0 | 2 |
| September | 28 | 22 | 0 | 1 |
| October | 19 | 6 | <1 | <1 |
| November | 4 | <1 | 6 | <1 |
| December | 0 | 0 | 17 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 15% | 13% | 5% | 12% | 11.7–17.6°C |
| February | 25% | 15% | 6% | 14% | 13.1–19.8°C |
| March | 47% | 12% | 4% | 10% | 16.3–21.8°C |
| April | 76% | 8% | 2% | 5% | 20.4–25.9°C |
| May | 91% | 4% | <1% | 2% | 24.8–30.9°C |
| June | 97% | 3% | <1% | 2% | 31.3–35.4°C |
| July | 86% | 14% | 4% | 13% | 34.2–37.6°C |
| August | 80% | 19% | 6% | 19% | 32.6–36.8°C |
| September | 89% | 11% | 3% | 7% | 29.9–34.3°C |
| October | 85% | 8% | 3% | 5% | 23.1–28.8°C |
| November | 54% | 8% | 3% | 5% | 16.6–23.1°C |
| December | 19% | 11% | 4% | 9% | 12.4–18.2°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