August
August · July · September
United States · 1991–2020
August leads for comfortable weather in Rome: typically 26.6°C by day, 14°C at night, with 95 mm of rain. Based on measured 1991–2020 NOAA station history.
August · July · September
July · August · June
September · May · October
The weakest month is January, scoring 5 against August’s 76 — days reach only -3.9°C, 28° 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 | -3.9°C | -13.2°C | 22 mm | 5.3 | 9 h 12 | 5 | Good coverage |
| February | -1.6°C | -11.8°C | 25 mm | 5 | 10 h 23 | 5 | Good coverage |
| March | 5.4°C | -5.6°C | 47 mm | 6.6 | 11 h 47 | 5 | Good coverage |
| April | 13.5°C | 0.8°C | 79 mm | 9 | 13 h 23 | 28 | Good coverage |
| May | 20.4°C | 7.2°C | 100 mm | 11.2 | 14 h 45 | 58 | Good coverage |
| June | 25.5°C | 12.7°C | 124 mm | 10.8 | 15 h 29 | 71 | Good coverage |
| July | 28.2°C | 15.1°C | 88 mm | 7.7 | 15 h 12 | 74 | Good coverage |
| August | 26.6°C | 14°C | 95 mm | 8.2 | 14 h 01 | 76 | Good coverage |
| September | 22.5°C | 9.6°C | 85 mm | 8.5 | 12 h 27 | 73 | Good coverage |
| October | 14.4°C | 2.9°C | 66 mm | 7.8 | 10 h 55 | 38 | Good coverage |
| November | 6.3°C | -3.2°C | 40 mm | 6 | 9 h 33 | 6 | Good coverage |
| December | -1.3°C | -9.8°C | 32 mm | 5.6 | 8 h 53 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 12.2°C30 Jan 2025 | -35.5°C31 Jan 2019 | 27 mm8 Jan 2026 | 65 mm2017 · driest 3 mm in 2025 | 30 |
| February | 22.2°C27 Feb 2024 | -30.5°C21 Feb 2008 | 29 mm12 Feb 2019 | 69 mm2019 · driest 1 mm in 2021 | 30 |
| March | 27.8°C26 Mar 2007 | -30.5°C3 Mar 2014 | 45 mm15 Mar 2016 | 154 mm2016 · driest 4 mm in 1999 | 30 |
| April | 31.7°C29 Apr 2007 | -14.9°C8 Apr 2018 | 62 mm14 Apr 2018 | 180 mm2026 · driest 23 mm in 2020 | 30 |
| May | 36.7°C27 May 2018 | -5.0°C3 May 2004 | 60 mm25 May 2021 | 210 mm2024 · driest 51 mm in 2026 | 30 |
| June | 35.6°C30 Jun 2018 | 1.1°C4 Jun 1998 | 77 mm21 Jun 2002 | 232 mm2000 · driest 38 mm in 2006 | 30 |
| July | 38.9°C4 Jul 2012 | 5.0°C7 Jul 1997 | 86 mm15 Jul 2022 | 238 mm1999 · driest 19 mm in 2012 | 31 |
| August | 37.2°C23 Aug 2023 | 1.7°C21 Aug 2004 | 92 mm18 Aug 2014 | 243 mm2021 · driest 12 mm in 2013 | 30 |
| September | 37.8°C3 Sep 2023 | -2.1°C30 Sep 2009 | 105 mm23 Sep 2010 | 190 mm2010 · driest 13 mm in 2009 | 30 |
| October | 31.1°C1 Oct 2023 | -6.7°C24 Oct 1999 | 61 mm24 Oct 2023 | 163 mm2023 · driest 9 mm in 2000 | 30 |
| November | 23.9°C8 Nov 2020 | -22.2°C27 Nov 1996 | 41 mm10 Nov 2020 | 82 mm2024 · driest 1 mm in 2007 | 30 |
| December | 17.2°C15 Dec 2021 | -30.6°C25 Dec 2000 | 34 mm13 Dec 2015 | 116 mm2015 · driest 1 mm in 2020 | 30 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 4 |
| February | 0 | 0 | 27 | <1 | 5 |
| March | <1 | 0 | 25 | 1 | 3 |
| April | 2 | <1 | 14 | 2 | 2 |
| May | 8 | 2 | 3 | 4 | 0 |
| June | 18 | 5 | 0 | 4 | 0 |
| July | 26 | 10 | 0 | 3 | 0 |
| August | 22 | 5 | 0 | 3 | 0 |
| September | 11 | 2 | <1 | 3 | 0 |
| October | 2 | 0 | 11 | 2 | <1 |
| November | 0 | 0 | 22 | 1 | 2 |
| December | 0 | 0 | 29 | 1 | 5 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 17% | 1% | 12% | -6.6–-1.2°C |
| February | <1% | 17% | 2% | 13% | -5.9–2.5°C |
| March | 3% | 21% | 5% | 22% | 1.8–10.0°C |
| April | 15% | 32% | 8% | 40% | 10.8–16.0°C |
| May | 40% | 35% | 11% | 46% | 18.6–23.0°C |
| June | 61% | 35% | 14% | 47% | 24.2–27.7°C |
| July | 74% | 25% | 9% | 29% | 26.1–29.9°C |
| August | 72% | 27% | 11% | 31% | 24.8–28.2°C |
| September | 55% | 27% | 9% | 33% | 20.5–24.8°C |
| October | 18% | 25% | 7% | 24% | 11.6–17.2°C |
| November | 3% | 19% | 4% | 19% | 1.8–10.2°C |
| December | 0% | 18% | 3% | 12% | -4.1–1.7°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