May
May · September · October
United States · 1991–2020
May leads for comfortable weather in Thomas: typically 25.1°C by day, 7.1°C at night, with 45 mm of rain. Based on measured 1991–2020 NOAA station history.
May · September · October
June · August · September
October · April · May
The weakest month is December, scoring 13 against May’s 79 — days reach only 9.4°C, 15° below the 24°C the score treats as ideal, and nights drop to -6.8°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 | 10.1°C | -6.7°C | 13 mm | 2.4 | 9 h 56 | 15 | Good coverage |
| February | 10.9°C | -6.4°C | 9 mm | 2.1 | 10 h 48 | 18 | Good coverage |
| March | 16.4°C | -1.6°C | 27 mm | 3.2 | 11 h 51 | 45 | Good coverage |
| April | 20.4°C | 2.1°C | 39 mm | 4.7 | 13 h 04 | 63 | Good coverage |
| May | 25.1°C | 7.1°C | 45 mm | 4.9 | 14 h 04 | 79 | Good coverage |
| June | 30.9°C | 12.5°C | 49 mm | 6.1 | 14 h 37 | 68 | Good coverage |
| July | 32.3°C | 15.4°C | 97 mm | 7.6 | 14 h 24 | 59 | Good coverage |
| August | 31°C | 14.5°C | 76 mm | 6.4 | 13 h 32 | 67 | Good coverage |
| September | 27.5°C | 10.7°C | 48 mm | 4.2 | 12 h 22 | 78 | Good coverage |
| October | 21°C | 3.7°C | 31 mm | 3.4 | 11 h 12 | 69 | Good coverage |
| November | 15.2°C | -2.1°C | 14 mm | 2 | 10 h 11 | 40 | Good coverage |
| December | 9.4°C | -6.8°C | 22 mm | 2.5 | 9 h 42 | 13 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.1°C19 Jan 2018 | -22.2°C6 Jan 2014 | 20 mm29 Jan 2010 | 48 mm2017 · driest 0 mm in 2018 | 17 |
| February | 27.8°C11 Feb 2017 | -29.4°C3 Feb 2011 | 20 mm22 Feb 2015 | 32 mm2010 · driest 1 mm in 2006 | 17 |
| March | 30.0°C23 Mar 2012 | -20.0°C5 Mar 2015 | 52 mm8 Mar 2010 | 101 mm2010 · driest 0 mm in 2018 | 17 |
| April | 32.8°C30 Apr 2013 | -11.1°C10 Apr 2013 | 66 mm30 Apr 1999 | 142 mm2004 · driest 1 mm in 2008 | 18 |
| May | 35.0°C28 May 2011 | -5.6°C3 May 2013 | 89 mm19 May 2015 | 176 mm2015 · driest 4 mm in 2004 | 18 |
| June | 40.0°C27 Jun 2012 | 3.3°C11 Jun 2019 | 50 mm1 Jun 2016 | 124 mm2016 · driest 17 mm in 2009 | 19 |
| July | 40.6°C10 Jul 2016 | 9.4°C31 Jul 2018 | 63 mm6 Jul 2018 | 241 mm2015 · driest 4 mm in 2005 | 19 |
| August | 39.4°C11 Aug 2012 | 5.0°C15 Aug 2008 | 67 mm16 Aug 2008 | 190 mm2008 · driest 0 mm in 2010 | 19 |
| September | 37.2°C6 Sep 2020 | -2.2°C29 Sep 1999 | 77 mm16 Sep 2013 | 154 mm2013 · driest 6 mm in 2003 | 20 |
| October | 32.8°C3 Oct 2018 | -16.1°C30 Oct 2019 | 35 mm31 Oct 1998 | 99 mm2018 · driest 3 mm in 2011 | 20 |
| November | 28.9°C9 Nov 2006 | -17.8°C17 Nov 2014 | 39 mm6 Nov 2016 | 65 mm2004 · driest 0 mm in 2010 | 19 |
| December | 23.9°C11 Dec 2004 | -25.6°C18 Dec 2016 | 81 mm27 Dec 2018 | 101 mm2018 · driest 0 mm in 2005 | 17 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | <1 | 0 | 28 | <1 | 3 |
| February | <1 | 0 | 25 | <1 | 2 |
| March | 3 | <1 | 19 | <1 | 2 |
| April | 7 | <1 | 9 | 1 | <1 |
| May | 17 | 6 | 2 | 1 | <1 |
| June | 26 | 18 | 0 | 2 | <1 |
| July | 28 | 23 | 0 | 3 | 0 |
| August | 27 | 20 | 0 | 3 | 0 |
| September | 22 | 10 | <1 | 1 | 0 |
| October | 9 | 1 | 7 | 1 | <1 |
| November | 2 | 0 | 19 | <1 | 2 |
| December | 0 | 0 | 27 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 6% | 8% | 2% | 1% | 8.4–12.5°C |
| February | 11% | 8% | <1% | 2% | 9.0–13.4°C |
| March | 33% | 10% | 3% | 5% | 13.9–18.7°C |
| April | 58% | 16% | 4% | 13% | 18.5–23.1°C |
| May | 72% | 16% | 4% | 15% | 22.7–27.6°C |
| June | 79% | 20% | 6% | 22% | 28.4–33.6°C |
| July | 75% | 24% | 9% | 25% | 30.8–34.5°C |
| August | 79% | 21% | 9% | 18% | 28.3–33.0°C |
| September | 82% | 14% | 5% | 11% | 25.0–30.1°C |
| October | 61% | 11% | 4% | 6% | 17.6–22.9°C |
| November | 28% | 7% | 2% | 2% | 12.5–18.4°C |
| December | 7% | 8% | 2% | 1% | 6.9–12.1°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