September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Lincolnshire: typically 24.2°C by day, 13.3°C at night, with 76 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
May · September · October
The weakest month is January, scoring 5 against September’s 88 — days reach only -0.1°C, 24° 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 | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | -0.1°C | -8°C | 31 mm | 4.6 | 3.4°C | 9 h 25 | 5 | Good coverage |
| February | 2°C | -6.5°C | 31 mm | 4.2 | 2.2°C | 10 h 30 | 5 | Good coverage |
| March | 8.1°C | -1.4°C | 45 mm | 6.1 | 2.1°C | 11 h 48 | 14 | Good coverage |
| April | 14.5°C | 3.6°C | 78 mm | 8.9 | 3.5°C | 13 h 18 | 37 | Good coverage |
| May | 20.7°C | 9.4°C | 105 mm | 9.9 | 6.2°C | 14 h 33 | 63 | Good coverage |
| June | 26.3°C | 15.2°C | 104 mm | 8.7 | 12.9°C | 15 h 14 | 77 | Good coverage |
| July | 28.8°C | 18.3°C | 82 mm | 6.5 | 20.1°C | 14 h 58 | 68 | Good coverage |
| August | 27.7°C | 17.6°C | 87 mm | 7.2 | 21.8°C | 13 h 53 | 72 | Good coverage |
| September | 24.2°C | 13.3°C | 76 mm | 6.3 | 19.4°C | 12 h 26 | 88 | Good coverage |
| October | 16.8°C | 6.5°C | 81 mm | 8 | 13.8°C | 10 h 59 | 50 | Good coverage |
| November | 9.3°C | 0.4°C | 48 mm | 6 | 8.5°C | 9 h 44 | 21 | Good coverage |
| December | 2.5°C | -5°C | 44 mm | 6.1 | 5.3°C | 9 h 07 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 18.3°C7 Jan 2008 | -29.3°C30 Jan 2019 | 38 mm29 Jan 2013 | 91 mm2013 · driest 2 mm in 2011 | 30 |
| February | 23.9°C27 Feb 2024 | -24.3°C28 Feb 2015 | 39 mm20 Feb 2018 | 88 mm2023 · driest 0 mm in 2015 | 30 |
| March | 30.0°C20 Mar 2012 | -19.9°C3 Mar 2014 | 40 mm30 Mar 2017 | 102 mm2026 · driest 11 mm in 2005 | 30 |
| April | 31.1°C27 Apr 2021 | -6.7°C9 Apr 1997 | 51 mm20 Apr 2000 | 232 mm1999 · driest 11 mm in 2005 | 30 |
| May | 36.1°C27 May 2018 | -1.7°C3 May 2004 | 66 mm17 May 2020 | 204 mm2018 · driest 18 mm in 2023 | 30 |
| June | 37.2°C14 Jun 2022 | 2.8°C1 Jun 2003 | 115 mm26 Jun 2013 | 248 mm2018 · driest 7 mm in 2005 | 30 |
| July | 40.0°C6 Jul 2012 | 10.0°C2 Jul 2001 | 86 mm23 Jul 2011 | 207 mm2011 · driest 0 mm in 2002 | 31 |
| August | 37.8°C24 Aug 2023 | 8.3°C31 Aug 2009 | 54 mm4 Aug 2014 | 252 mm2007 · driest 0 mm in 2002 | 30 |
| September | 35.6°C10 Sep 2013 | 1.1°C24 Sep 2012 | 111 mm13 Sep 2008 | 240 mm2008 · driest 8 mm in 2004 | 29 |
| October | 31.7°C5 Oct 1997 | -3.8°C31 Oct 2023 | 90 mm13 Oct 2001 | 208 mm2017 · driest 6 mm in 2005 | 30 |
| November | 24.4°C10 Nov 2022 | -12.7°C12 Nov 2019 | 40 mm2 Nov 2003 | 128 mm2003 · driest 9 mm in 1999 | 30 |
| December | 20.6°C3 Dec 2012 | -22.2°C22 Dec 2000 | 36 mm1 Dec 2006 | 109 mm2008 · driest 7 mm in 2017 | 30 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 28 | <1 |
| February | 0 | 0 | 25 | 1 |
| March | <1 | <1 | 20 | 1 |
| April | 2 | <1 | 6 | 3 |
| May | 9 | 3 | <1 | 4 |
| June | 19 | 8 | 0 | 3 |
| July | 26 | 13 | 0 | 2 |
| August | 24 | 8 | 0 | 3 |
| September | 13 | 4 | 0 | 2 |
| October | 3 | <1 | 2 | 2 |
| November | 0 | 0 | 15 | 2 |
| December | 0 | 0 | 26 | 1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 15% | 3% | 12% | -2.4–3.4°C |
| February | <1% | 15% | 3% | 9% | -2.4–6.3°C |
| March | 6% | 22% | 5% | 27% | 5.8–12.0°C |
| April | 16% | 30% | 9% | 36% | 13.0–17.2°C |
| May | 40% | 30% | 11% | 38% | 18.6–23.3°C |
| June | 66% | 29% | 10% | 34% | 24.8–28.5°C |
| July | 77% | 23% | 9% | 23% | 26.7–31.0°C |
| August | 76% | 23% | 9% | 25% | 26.0–29.5°C |
| September | 66% | 20% | 7% | 20% | 22.4–26.2°C |
| October | 25% | 26% | 8% | 25% | 15.4–19.3°C |
| November | 5% | 20% | 5% | 18% | 5.6–12.8°C |
| December | 0% | 20% | 5% | 15% | -0.5–6.1°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