June
June · September · July
United States · 1991–2020
June leads for comfortable weather in Julian (historical): typically 24.3°C by day, 8.5°C at night, with 77 mm of rain. Based on measured 1991–2020 NOAA station history.
June · September · July
August · July · June
September · May · June
The weakest month is January, scoring 5 against June’s 76 — days reach only -5.3°C, 29° below the 24°C the score treats as ideal, and nights drop to -18°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 | -5.3°C | -18°C | 8 mm | 2 | 8 h 39 | 5 | Strong coverage |
| February | -2.9°C | -15.8°C | 6 mm | 1.7 | 10 h 04 | 5 | Strong coverage |
| March | 4.1°C | -9.1°C | 10 mm | 2.4 | 11 h 43 | 5 | Strong coverage |
| April | 13.3°C | -2.7°C | 25 mm | 4.4 | 13 h 37 | 32 | Strong coverage |
| May | 19.7°C | 3.1°C | 49 mm | 6.8 | 15 h 15 | 59 | Strong coverage |
| June | 24.3°C | 8.5°C | 77 mm | 8.8 | 16 h 10 | 76 | Strong coverage |
| July | 28.5°C | 10.8°C | 57 mm | 6.4 | 15 h 48 | 72 | Strong coverage |
| August | 28.7°C | 9.5°C | 41 mm | 5.1 | 14 h 23 | 72 | Strong coverage |
| September | 22.4°C | 4°C | 30 mm | 3.5 | 12 h 31 | 75 | Strong coverage |
| October | 13.4°C | -2.5°C | 21 mm | 3.2 | 10 h 42 | 33 | Strong coverage |
| November | 3.6°C | -9.5°C | 9 mm | 2.4 | 9 h 04 | 5 | Strong coverage |
| December | -3.4°C | -15.7°C | 7 mm | 2 | 8 h 15 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 15.6°C7 Jan 2003 | -44.4°C30 Jan 1996 | 18 mm14 Jan 2001 | 28 mm2004 · driest 0 mm in 2007 | 39 |
| February | 18.3°C27 Feb 1992 | -46.1°C8 Feb 2019 | 19 mm27 Feb 2004 | 26 mm2004 · driest 0 mm in 2013 | 39 |
| March | 26.1°C28 Mar 2015 | -38.9°C8 Mar 2003 | 23 mm24 Mar 2015 | 57 mm1995 · driest 0 mm in 2001 | 39 |
| April | 30.6°C24 Apr 2012 | -23.3°C1 Apr 2018 | 32 mm10 Apr 1999 | 53 mm2006 · driest 0 mm in 2005 | 39 |
| May | 36.7°C29 May 1988 | -14.4°C3 May 2005 | 55 mm31 May 2007 | 155 mm2007 · driest 7 mm in 1997 | 39 |
| June | 41.1°C5 Jun 1988 | -5.0°C4 Jun 1998 | 72 mm17 Jun 2011 | 179 mm2011 · driest 14 mm in 2009 | 40 |
| July | 43.3°C24 Jul 2007 | 0.6°C22 Jul 2003 | 70 mm28 Jul 2015 | 225 mm1993 · driest 6 mm in 2017 | 38 |
| August | 41.7°C7 Aug 1995 | -2.2°C31 Aug 1994 | 51 mm15 Aug 2009 | 108 mm1995 · driest 1 mm in 2022 | 39 |
| September | 38.3°C9 Sep 2005 | -12.2°C21 Sep 1995 | 72 mm7 Sep 2013 | 142 mm2019 · driest 0 mm in 2012 | 37 |
| October | 35.0°C1 Oct 1992 | -25.0°C30 Oct 1991 | 41 mm7 Oct 2011 | 79 mm1998 · driest 0 mm in 2010 | 39 |
| November | 24.4°C1 Nov 1999 | -36.7°C24 Nov 1996 | 22 mm5 Nov 2008 | 31 mm1996 · driest 0 mm in 2009 | 38 |
| December | 13.9°C6 Dec 2023 | -41.7°C25 Dec 1996 | 13 mm29 Dec 1996 | 21 mm2004 · driest 0 mm in 1999 | 39 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 3 |
| February | 0 | 0 | 28 | 0 | 2 |
| March | <1 | 0 | 29 | <1 | 1 |
| April | 1 | <1 | 21 | <1 | <1 |
| May | 6 | 1 | 9 | 2 | <1 |
| June | 14 | 4 | <1 | 3 | 0 |
| July | 24 | 12 | 0 | 2 | 0 |
| August | 24 | 13 | <1 | 1 | 0 |
| September | 11 | 4 | 6 | <1 | 0 |
| October | 2 | <1 | 21 | <1 | <1 |
| November | 0 | 0 | 28 | <1 | 2 |
| December | 0 | 0 | 30 | 0 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 6% | <1% | 2% | -9.1–-0.7°C |
| February | 0% | 6% | <1% | 2% | -10.4–3.2°C |
| March | 2% | 8% | <1% | 3% | -1.3–9.9°C |
| April | 20% | 14% | 2% | 8% | 9.6–16.2°C |
| May | 45% | 23% | 5% | 24% | 17.5–22.5°C |
| June | 64% | 29% | 8% | 35% | 22.5–27.6°C |
| July | 78% | 21% | 6% | 18% | 26.7–32.6°C |
| August | 81% | 17% | 4% | 8% | 25.0–31.4°C |
| September | 66% | 11% | 3% | 7% | 19.7–26.2°C |
| October | 20% | 11% | 2% | 4% | 10.1–16.7°C |
| November | 2% | 9% | <1% | 3% | -0.7–8.6°C |
| December | 0% | 7% | <1% | 2% | -8.9–1.6°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