April
April · October · November
United States · 1991–2020
April leads for comfortable weather in Oak Ridge: typically 24.7°C by day, 12.6°C at night, with 71 mm of rain. Based on measured 1991–2020 NOAA station history.
April · October · November
September · May · June
November · March · April
The weakest month is January, scoring 38 against April’s 86 — days reach only 14.2°C, 10° below the 24°C the score treats as ideal, and nights drop to 2.3°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 | 14.2°C | 2.3°C | 65 mm | 5.6 | 10 h 13 | 38 | Good coverage |
| February | 16.1°C | 4.4°C | 69 mm | 6 | 10 h 58 | 47 | Good coverage |
| March | 20.4°C | 8.6°C | 96 mm | 6.9 | 11 h 53 | 65 | Good coverage |
| April | 24.7°C | 12.6°C | 71 mm | 5.7 | 12 h 56 | 86 | Good coverage |
| May | 29°C | 17.7°C | 105 mm | 7 | 13 h 49 | 65 | Good coverage |
| June | 33.1°C | 22.1°C | 91 mm | 5.5 | 14 h 17 | 47 | Good coverage |
| July | 35.3°C | 23.6°C | 50 mm | 3.8 | 14 h 06 | 44 | Good coverage |
| August | 35.9°C | 23.6°C | 56 mm | 3.7 | 13 h 21 | 42 | Good coverage |
| September | 31.9°C | 19.7°C | 65 mm | 4.3 | 12 h 20 | 60 | Good coverage |
| October | 26°C | 13.4°C | 108 mm | 5.7 | 11 h 19 | 78 | Good coverage |
| November | 20°C | 7.9°C | 69 mm | 5.5 | 10 h 26 | 67 | Good coverage |
| December | 14.8°C | 3°C | 81 mm | 5.6 | 10 h 01 | 39 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 27.8°C3 Jan 2009 | -12.1°C17 Jan 2018 | 82 mm29 Jan 1999 | 122 mm2007 · driest 3 mm in 2022 | 29 |
| February | 30.0°C21 Feb 2023 | -21.6°C16 Feb 2021 | 49 mm16 Feb 2001 | 171 mm2001 · driest 4 mm in 1999 | 29 |
| March | 32.2°C22 Mar 2026 | -8.3°C3 Mar 2002 | 94 mm19 Mar 2006 | 219 mm2007 · driest 19 mm in 2011 | 29 |
| April | 34.4°C18 Apr 2006 | 0.0°C15 Apr 2014 | 78 mm20 Apr 2024 | 208 mm2024 · driest 15 mm in 2001 | 29 |
| May | 37.8°C31 May 1998 | 2.2°C4 May 2013 | 87 mm19 May 2000 | 309 mm2015 · driest 0 mm in 2023 | 29 |
| June | 41.7°C26 Jun 2012 | 13.9°C5 Jun 2009 | 93 mm21 Jun 2011 | 265 mm2007 · driest 12 mm in 2005 | 29 |
| July | 42.2°C22 Jul 2018 | 15.6°C3 Jul 2013 | 71 mm31 Jul 2014 | 143 mm2005 · driest 0 mm in 2011 | 29 |
| August | 42.8°C2 Aug 2011 | 16.1°C12 Aug 2004 | 73 mm30 Aug 2001 | 186 mm2018 · driest 0 mm in 2000 | 28 |
| September | 43.3°C4 Sep 2000 | 6.1°C26 Sep 2000 | 87 mm5 Sep 2007 | 187 mm2009 · driest 1 mm in 2021 | 28 |
| October | 36.1°C6 Oct 2019 | -0.5°C31 Oct 2019 | 131 mm23 Oct 2015 | 339 mm2009 · driest 0 mm in 2010 | 28 |
| November | 32.8°C2 Nov 2017 | -6.6°C13 Nov 2019 | 78 mm5 Nov 2000 | 224 mm2015 · driest 2 mm in 2012 | 28 |
| December | 28.3°C3 Dec 2005 | -11.6°C22 Dec 2022 | 151 mm16 Dec 2001 | 238 mm2001 · driest 0 mm in 2025 | 28 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 1 | 0 | 12 | 2 |
| February | 2 | 0 | 7 | 2 |
| March | 8 | <1 | 2 | 3 |
| April | 17 | 2 | 0 | 2 |
| May | 27 | 15 | 0 | 3 |
| June | 30 | 27 | 0 | 3 |
| July | 31 | 30 | 0 | 1 |
| August | 31 | 29 | 0 | 2 |
| September | 28 | 23 | 0 | 2 |
| October | 20 | 8 | <1 | 3 |
| November | 6 | <1 | 3 | 2 |
| December | 2 | 0 | 11 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 18% | 17% | 6% | 13% | 11.5–16.1°C |
| February | 32% | 20% | 8% | 19% | 12.9–20.0°C |
| March | 52% | 22% | 10% | 20% | 18.5–23.0°C |
| April | 73% | 19% | 9% | 12% | 23.0–26.4°C |
| May | 77% | 23% | 11% | 21% | 27.6–30.9°C |
| June | 81% | 19% | 8% | 17% | 31.3–35.7°C |
| July | 88% | 12% | 4% | 8% | 33.5–37.5°C |
| August | 88% | 12% | 5% | 10% | 33.7–38.1°C |
| September | 87% | 13% | 6% | 8% | 29.4–34.2°C |
| October | 76% | 18% | 10% | 18% | 24.1–28.1°C |
| November | 48% | 17% | 8% | 14% | 17.4–22.4°C |
| December | 22% | 17% | 7% | 16% | 13.2–17.2°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