September
September · August · June
United States · 1991–2020
September leads for comfortable weather in Gardner: typically 25°C by day, 11°C at night, with 84 mm of rain. Based on measured 1991–2020 NOAA station history.
September · August · June
July · August · June
October · May · September
The weakest month is January, scoring 5 against September’s 79 — days reach only -0.8°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 | -0.8°C | -9.8°C | 45 mm | 5.4 | 9 h 30 | 5 | Strong coverage |
| February | 1.7°C | -7.9°C | 41 mm | 5.4 | 10 h 33 | 5 | Strong coverage |
| March | 8.6°C | -2.7°C | 62 mm | 7.8 | 11 h 48 | 9 | Strong coverage |
| April | 16°C | 3°C | 92 mm | 9.5 | 13 h 15 | 38 | Strong coverage |
| May | 22.3°C | 9.9°C | 122 mm | 9.8 | 14 h 28 | 67 | Strong coverage |
| June | 27.3°C | 15.3°C | 117 mm | 8.7 | 15 h 07 | 72 | Strong coverage |
| July | 28.6°C | 17°C | 98 mm | 7.8 | 14 h 52 | 68 | Strong coverage |
| August | 27.7°C | 15.5°C | 93 mm | 7.2 | 13 h 49 | 75 | Strong coverage |
| September | 25°C | 11°C | 84 mm | 6.8 | 12 h 25 | 79 | Strong coverage |
| October | 17.7°C | 4.7°C | 76 mm | 7.5 | 11 h 02 | 51 | Strong coverage |
| November | 9.2°C | -1.2°C | 64 mm | 7 | 9 h 49 | 14 | Strong coverage |
| December | 2.3°C | -6.6°C | 50 mm | 6.6 | 9 h 13 | 5 | Strong coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.3°C8 Jan 2008 | -30.0°C17 Jan 2009 | 66 mm8 Jan 2008 | 97 mm1993 · driest 5 mm in 2022 | 35 |
| February | 22.8°C27 Feb 2024 | -28.3°C11 Feb 2014 | 42 mm25 Feb 2001 | 108 mm1997 · driest 4 mm in 2026 | 36 |
| March | 28.9°C22 Mar 2012 | -20.6°C6 Mar 2015 | 56 mm8 Mar 2009 | 136 mm2009 · driest 14 mm in 2015 | 36 |
| April | 31.7°C17 Apr 2002 | -10.0°C2 Apr 2018 | 69 mm18 Apr 2013 | 193 mm2013 · driest 37 mm in 2012 | 36 |
| May | 35.6°C28 May 2018 | -4.4°C4 May 2005 | 78 mm15 May 2020 | 286 mm2019 · driest 11 mm in 1992 | 36 |
| June | 37.2°C16 Jun 1994 | -1.1°C5 Jun 1993 | 121 mm11 Jun 1998 | 313 mm2015 · driest 16 mm in 1991 | 36 |
| July | 39.4°C14 Jul 1995 | 6.1°C2 Jul 2001 | 115 mm18 Jul 2016 | 233 mm1992 · driest 16 mm in 1991 | 35 |
| August | 37.8°C25 Aug 1991 | 5.0°C10 Aug 2002 | 155 mm22 Aug 2014 | 271 mm2007 · driest 23 mm in 2020 | 35 |
| September | 37.8°C2 Sep 2000 | -2.8°C23 Sep 1995 | 86 mm28 Sep 2019 | 321 mm2008 · driest 13 mm in 1995 | 34 |
| October | 31.7°C5 Oct 2005 | -6.7°C19 Oct 1992 | 91 mm25 Oct 2021 | 238 mm2021 · driest 6 mm in 2005 | 35 |
| November | 26.7°C2 Nov 2000 | -15.6°C22 Nov 2015 | 43 mm5 Nov 2024 | 144 mm1994 · driest 16 mm in 1999 | 35 |
| December | 20.6°C4 Dec 2012 | -25.0°C25 Dec 2000 | 43 mm15 Dec 2011 | 138 mm2015 · driest 5 mm in 1995 | 36 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 1 | 3 |
| February | 0 | 0 | 26 | 1 | 3 |
| March | <1 | 0 | 23 | 2 | 1 |
| April | 3 | <1 | 9 | 3 | <1 |
| May | 11 | 4 | <1 | 4 | 0 |
| June | 22 | 9 | 0 | 4 | 0 |
| July | 27 | 11 | 0 | 3 | 0 |
| August | 25 | 8 | 0 | 3 | 0 |
| September | 16 | 5 | <1 | 3 | 0 |
| October | 5 | <1 | 6 | 3 | 0 |
| November | <1 | 0 | 19 | 2 | <1 |
| December | 0 | 0 | 28 | 2 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 18% | 4% | 14% | -4.0–2.3°C |
| February | <1% | 18% | 4% | 14% | -3.2–5.7°C |
| March | 6% | 25% | 7% | 29% | 5.6–13.0°C |
| April | 20% | 32% | 11% | 40% | 13.6–18.8°C |
| May | 47% | 31% | 12% | 40% | 19.6–25.0°C |
| June | 69% | 28% | 13% | 31% | 25.7–29.1°C |
| July | 74% | 26% | 11% | 28% | 26.9–30.7°C |
| August | 77% | 22% | 9% | 21% | 25.8–29.1°C |
| September | 69% | 22% | 8% | 25% | 23.3–27.1°C |
| October | 31% | 25% | 9% | 26% | 16.1–19.9°C |
| November | 5% | 23% | 7% | 20% | 5.1–12.5°C |
| December | 0% | 22% | 5% | 18% | -0.6–6.1°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