August
August · July · June
United States · 1991–2020
August leads for comfortable weather in Manchester: typically 25.7°C by day, 12.2°C at night, with 107 mm of rain. Based on measured 1991–2020 NOAA station history.
August · July · June
July · August · June
September · May · August
The weakest month is January, scoring 5 against August’s 74 — days reach only -0.9°C, 25° 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 | -0.9°C | -11.5°C | 91 mm | 11 | 9 h 19 | 5 | Good coverage |
| February | 1.1°C | -10.6°C | 66 mm | 8.3 | 10 h 27 | 5 | Good coverage |
| March | 6°C | -5.9°C | 92 mm | 10.5 | 11 h 47 | 5 | Good coverage |
| April | 13.9°C | 0.2°C | 87 mm | 10.8 | 13 h 20 | 26 | Good coverage |
| May | 19.9°C | 5.8°C | 107 mm | 12.2 | 14 h 38 | 52 | Good coverage |
| June | 24.2°C | 10.7°C | 134 mm | 12 | 15 h 21 | 70 | Good coverage |
| July | 26.3°C | 13°C | 113 mm | 10.3 | 15 h 05 | 71 | Good coverage |
| August | 25.7°C | 12.2°C | 107 mm | 8.7 | 13 h 57 | 74 | Good coverage |
| September | 22.2°C | 8°C | 105 mm | 9.4 | 12 h 27 | 66 | Good coverage |
| October | 14.4°C | 2.3°C | 120 mm | 10.8 | 10 h 57 | 27 | Good coverage |
| November | 9°C | -1.8°C | 90 mm | 9.1 | 9 h 39 | 7 | Good coverage |
| December | 2.3°C | -7.5°C | 103 mm | 10.8 | 9 h 00 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 19.4°C9 Jan 2008 | -31.1°C28 Jan 2005 | 32 mm10 Jan 1999 | 180 mm1999 · driest 34 mm in 2001 | 15 |
| February | 18.3°C13 Feb 1999 | -26.1°C26 Feb 2003 | 57 mm15 Feb 2007 | 199 mm2008 · driest 20 mm in 2013 | 15 |
| March | 26.7°C22 Mar 2012 | -23.9°C1 Mar 2008 | 55 mm22 Mar 2001 | 188 mm2001 · driest 19 mm in 2013 | 15 |
| April | 31.1°C28 Apr 2009 | -10.6°C7 Apr 2003 | 47 mm16 Apr 2007 | 153 mm2007 · driest 23 mm in 2001 | 16 |
| May | 33.3°C26 May 2010 | -4.4°C20 May 2002 | 52 mm20 May 1999 | 169 mm2000 · driest 26 mm in 2008 | 16 |
| June | 34.4°C1 Jun 2011 | -0.6°C1 Jun 2009 | 57 mm6 Jun 2002 | 250 mm2002 · driest 62 mm in 1999 | 16 |
| July | 34.4°C22 Jul 2011 | 3.9°C27 Jul 2001 | 67 mm24 Jul 2008 | 200 mm2004 · driest 53 mm in 2010 | 16 |
| August | 35.0°C14 Aug 2002 | 3.3°C20 Aug 1998 | 106 mm29 Aug 2011 | 291 mm2011 · driest 0 mm in 2013 | 16 |
| September | 33.9°C10 Sep 2002 | -6.1°C30 Sep 2000 | 96 mm17 Sep 1999 | 213 mm2011 · driest 43 mm in 2010 | 15 |
| October | 27.8°C7 Oct 2007 | -8.3°C31 Oct 2002 | 76 mm1 Oct 2010 | 278 mm2005 · driest 43 mm in 2001 | 15 |
| November | 22.8°C1 Nov 2006 | -16.1°C25 Nov 2000 | 53 mm25 Nov 2004 | 152 mm2002 · driest 10 mm in 2012 | 15 |
| December | 20.0°C2 Dec 2006 | -26.7°C15 Dec 2005 | 77 mm18 Dec 2000 | 182 mm2008 · driest 48 mm in 1999 | 15 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | 3 | 11 |
| February | 0 | 0 | 26 | 3 | 8 |
| March | <1 | 0 | 26 | 3 | 7 |
| April | 2 | <1 | 16 | 3 | 2 |
| May | 6 | 1 | 4 | 4 | 0 |
| June | 14 | 3 | <1 | 4 | 0 |
| July | 21 | 4 | 0 | 4 | 0 |
| August | 20 | 3 | 0 | 4 | 0 |
| September | 8 | 1 | 1 | 4 | 0 |
| October | <1 | 0 | 12 | 5 | <1 |
| November | 0 | 0 | 19 | 3 | 2 |
| December | 0 | 0 | 27 | 3 | 8 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 36% | 10% | 49% | -5.1–1.9°C |
| February | 0% | 30% | 8% | 39% | -1.4–3.4°C |
| March | 2% | 34% | 10% | 48% | 3.7–9.9°C |
| April | 13% | 36% | 10% | 48% | 11.7–15.7°C |
| May | 35% | 40% | 13% | 53% | 16.6–22.5°C |
| June | 48% | 38% | 15% | 50% | 22.6–26.0°C |
| July | 66% | 33% | 12% | 41% | 24.3–28.1°C |
| August | 69% | 29% | 12% | 33% | 24.6–27.3°C |
| September | 54% | 31% | 13% | 43% | 20.8–23.6°C |
| October | 12% | 35% | 13% | 44% | 12.8–16.3°C |
| November | 2% | 30% | 10% | 41% | 6.6–11.5°C |
| December | <1% | 35% | 11% | 48% | -0.3–5.5°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