September
September · August · June
United States · 1991–2020
September leads for comfortable weather in Newhall: typically 24.1°C by day, 11.2°C at night, with 95 mm of rain. Based on measured 1991–2020 NOAA station history.
September · August · June
July · August · June
September · October · May
The weakest month is January, scoring 5 against September’s 80 — days reach only -2.4°C, 26° below the 24°C the score treats as ideal.
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 | -2.4°C | -11.8°C | 30 mm | 5.9 | 9 h 26 | 5 | Strong coverage |
| February | 0.3°C | -9.4°C | 32 mm | 5.3 | 10 h 31 | 5 | Strong coverage |
| March | 8.1°C | -3°C | 52 mm | 6.6 | 11 h 48 | 10 | Strong coverage |
| April | 16.1°C | 3.2°C | 97 mm | 8.5 | 13 h 17 | 39 | Strong coverage |
| May | 22°C | 9.7°C | 125 mm | 10.9 | 14 h 32 | 64 | Strong coverage |
| June | 26.9°C | 15.3°C | 140 mm | 10.4 | 15 h 13 | 69 | Strong coverage |
| July | 28.6°C | 17.3°C | 107 mm | 8.3 | 14 h 57 | 66 | Strong coverage |
| August | 27.4°C | 15.9°C | 107 mm | 7.9 | 13 h 52 | 73 | Strong coverage |
| September | 24.1°C | 11.2°C | 95 mm | 7.4 | 12 h 26 | 80 | Strong coverage |
| October | 16.9°C | 4.6°C | 78 mm | 6.8 | 11 h | 49 | Strong coverage |
| November | 7.9°C | -2.3°C | 51 mm | 5.1 | 9 h 45 | 12 | Strong coverage |
| December | 0.6°C | -8.2°C | 40 mm | 6.3 | 9 h 08 | 5 | 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 | 17.2°C25 Jan 2002 | -37.2°C31 Jan 2019 | 43 mm12 Jan 1960 | 119 mm1960 · driest 1 mm in 1981 | 84 |
| February | 24.4°C27 Feb 2024 | -35.6°C1 Feb 2019 | 31 mm22 Feb 1981 | 78 mm2001 · driest 0 mm in 1987 | 85 |
| March | 31.1°C29 Mar 1986 | -36.7°C1 Mar 1962 | 50 mm27 Mar 1991 | 116 mm1998 · driest 3 mm in 1981 | 86 |
| April | 32.8°C29 Apr 1952 | -15.6°C6 Apr 1982 | 76 mm30 Apr 1954 | 217 mm2008 · driest 9 mm in 1942 | 87 |
| May | 35.0°C28 May 2018 | -5.6°C3 May 2005 | 118 mm30 May 1957 | 291 mm2013 · driest 12 mm in 1981 | 87 |
| June | 38.3°C20 Jun 1988 | 1.7°C4 Jun 1945 | 119 mm12 Jun 1947 | 286 mm1947 · driest 14 mm in 1963 | 87 |
| July | 40.6°C14 Jul 1977 | 5.6°C7 Jul 2023 | 87 mm1 Jul 2014 | 366 mm1993 · driest 8 mm in 1975 | 85 |
| August | 40.0°C1 Aug 1988 | 2.2°C20 Aug 1950 | 184 mm8 Aug 1977 | 375 mm1977 · driest 10 mm in 1947 | 85 |
| September | 37.8°C28 Sep 1953 | -5.6°C28 Sep 1942 | 112 mm23 Sep 1946 | 296 mm2018 · driest 3 mm in 2024 | 85 |
| October | 34.4°C2 Oct 1953 | -12.2°C29 Oct 1952 | 90 mm2 Oct 2019 | 208 mm2019 · driest 0 mm in 1952 | 84 |
| November | 26.7°C1 Nov 1944 | -23.3°C30 Nov 1976 | 90 mm4 Nov 2003 | 171 mm2003 · driest 2 mm in 1955 | 87 |
| December | 22.8°C16 Dec 2021 | -32.8°C19 Dec 1985 | 60 mm14 Dec 2015 | 135 mm2015 · driest 1 mm in 1979 | 87 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 5 |
| February | 0 | 0 | 26 | <1 | 4 |
| March | <1 | 0 | 22 | 2 | 2 |
| April | 3 | <1 | 9 | 3 | <1 |
| May | 10 | 2 | <1 | 4 | 0 |
| June | 22 | 7 | 0 | 5 | 0 |
| July | 27 | 11 | 0 | 3 | 0 |
| August | 25 | 7 | 0 | 3 | 0 |
| September | 14 | 4 | <1 | 3 | 0 |
| October | 3 | <1 | 7 | 2 | <1 |
| November | 0 | 0 | 20 | 2 | 1 |
| December | 0 | 0 | 29 | 1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 15% | 3% | 9% | -5.7–1.5°C |
| February | <1% | 15% | 3% | 10% | -4.0–5.0°C |
| March | 6% | 22% | 6% | 21% | 3.2–11.7°C |
| April | 24% | 27% | 10% | 31% | 13.0–19.5°C |
| May | 50% | 32% | 12% | 39% | 19.8–25.1°C |
| June | 68% | 29% | 13% | 33% | 25.2–29.6°C |
| July | 76% | 24% | 11% | 26% | 27.3–31.8°C |
| August | 76% | 23% | 9% | 22% | 26.0–30.0°C |
| September | 66% | 23% | 9% | 23% | 22.0–27.0°C |
| October | 34% | 19% | 7% | 17% | 15.6–20.6°C |
| November | 5% | 16% | 5% | 11% | 4.6–11.1°C |
| December | <1% | 16% | 4% | 11% | -3.4–4.4°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