September
September · August · July
United States · 1991–2020
September leads for comfortable weather in Pacific Grove: typically 21.1°C by day, 12.3°C at night, with 2 mm of rain. Based on measured 1991–2020 NOAA station history.
September · August · July
September · August · July
October · June · July
The weakest month is January, scoring 46 against September’s 86 — days reach only 16.1°C, 8° below the 24°C the score treats as ideal, and nights drop to 6.2°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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 16.1°C | 6.2°C | 87 mm | 8.6 | 12.7°C | 9 h 55 | 46 | Good coverage |
| February | 16.2°C | 6.9°C | 90 mm | 9.1 | 12.6°C | 10 h 47 | 47 | Good coverage |
| March | 16.9°C | 7.6°C | 66 mm | 7.8 | 12.5°C | 11 h 51 | 55 | Good coverage |
| April | 17.2°C | 8.5°C | 32 mm | 5.3 | 12.1°C | 13 h 05 | 64 | Good coverage |
| May | 18.2°C | 10.1°C | 11 mm | 2.2 | 12.1°C | 14 h 06 | 72 | Good coverage |
| June | 19.3°C | 11.2°C | 3 mm | 0.5 | 12.6°C | 14 h 39 | 78 | Good coverage |
| July | 20.1°C | 12.4°C | 1 mm | 0.2 | 13.7°C | 14 h 26 | 82 | Good coverage |
| August | 20.4°C | 12.7°C | 1 mm | 0.2 | 14.4°C | 13 h 33 | 84 | Good coverage |
| September | 21.1°C | 12.3°C | 2 mm | 0.5 | 14.7°C | 12 h 22 | 86 | Good coverage |
| October | 20.3°C | 10.4°C | 24 mm | 2.6 | 14.4°C | 11 h 11 | 80 | Good coverage |
| November | 18°C | 8.2°C | 45 mm | 5.7 | 13.8°C | 10 h 10 | 64 | Good coverage |
| December | 15.9°C | 6°C | 74 mm | 7.8 | 13.0°C | 9 h 40 | 47 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.7°C17 Jan 2014 | -3.3°C13 Jan 2007 | 51 mm23 Jan 2000 | 195 mm1997 · driest 0 mm in 2015 | 24 |
| February | 28.3°C8 Feb 2016 | 0.6°C11 Feb 1999 | 55 mm3 Feb 1998 | 349 mm1998 · driest 1 mm in 1997 | 24 |
| March | 30.0°C16 Mar 2004 | 1.7°C3 Mar 2017 | 41 mm5 Mar 2016 | 180 mm2006 · driest 3 mm in 1997 | 24 |
| April | 33.3°C26 Apr 2004 | 3.3°C4 Apr 2009 | 37 mm4 Apr 2006 | 76 mm2010 · driest 0 mm in 2004 | 23 |
| May | 36.1°C16 May 1997 | 5.0°C1 May 2008 | 26 mm15 May 1996 | 57 mm1998 · driest 0 mm in 2013 | 23 |
| June | 35.6°C26 Jun 2003 | 6.7°C10 Jun 2018 | 12 mm4 Jun 2011 | 20 mm2011 · driest 0 mm in 2018 | 22 |
| July | 30.0°C15 Jul 1995 | 8.3°C23 Jul 2002 | 2 mm19 Jul 2015 | 3 mm2015 · driest 0 mm in 2002 | 24 |
| August | 32.8°C9 Aug 2002 | 8.3°C27 Aug 2009 | 4 mm19 Aug 1997 | 4 mm2010 · driest 0 mm in 1996 | 24 |
| September | 38.3°C1 Sep 2017 | 6.7°C26 Sep 2004 | 8 mm8 Sep 1999 | 11 mm2007 · driest 0 mm in 1997 | 24 |
| October | 40.0°C8 Oct 1996 | 4.4°C13 Oct 2017 | 60 mm13 Oct 2009 | 99 mm2000 · driest 0 mm in 2002 | 24 |
| November | 32.8°C2 Nov 1997 | 0.6°C30 Nov 2006 | 48 mm30 Nov 2012 | 154 mm1997 · driest 1 mm in 1995 | 23 |
| December | 26.1°C5 Dec 2000 | -3.3°C24 Dec 1998 | 90 mm11 Dec 2014 | 217 mm2014 · driest 4 mm in 1999 | 24 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | <1 | 0 | <1 | 3 |
| February | <1 | 0 | 0 | 3 |
| March | 1 | <1 | 0 | 2 |
| April | 1 | <1 | 0 | <1 |
| May | 2 | <1 | 0 | <1 |
| June | 1 | <1 | 0 | 0 |
| July | 2 | 0 | 0 | 0 |
| August | 2 | <1 | 0 | 0 |
| September | 4 | 1 | 0 | 0 |
| October | 4 | 1 | 0 | <1 |
| November | 1 | <1 | 0 | 1 |
| December | <1 | 0 | <1 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 13% | 28% | 11% | 32% | 14.4–17.7°C |
| February | 15% | 32% | 11% | 46% | 14.0–18.5°C |
| March | 15% | 25% | 8% | 30% | 15.0–19.2°C |
| April | 17% | 18% | 3% | 17% | 15.6–19.4°C |
| May | 23% | 7% | <1% | 4% | 16.0–20.8°C |
| June | 40% | 2% | <1% | 0% | 18.1–21.0°C |
| July | 52% | <1% | 0% | 0% | 18.3–21.8°C |
| August | 59% | <1% | 0% | 0% | 18.4–22.7°C |
| September | 60% | 2% | 0% | <1% | 18.8–23.3°C |
| October | 46% | 8% | 2% | 6% | 18.6–22.2°C |
| November | 23% | 19% | 4% | 21% | 16.3–20.5°C |
| December | 10% | 25% | 8% | 32% | 14.0–17.9°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