April
April · October · March
United States · 1991–2020
April leads for comfortable weather in Joppa: typically 25.5°C by day, 11.7°C at night, with 57 mm of rain. Based on measured 1991–2020 NOAA station history.
April · October · March
June · July · August
November · March · February
The weakest month is January, scoring 45 against April’s 85 — days reach only 15.5°C, 8° below the 24°C the score treats as ideal, and nights drop to 1.5°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 | 15.5°C | 1.5°C | 47 mm | 4.3 | 10 h 21 | 45 | Strong coverage |
| February | 17.4°C | 3.5°C | 51 mm | 4.8 | 11 h 03 | 54 | Strong coverage |
| March | 21.4°C | 7.4°C | 71 mm | 5.5 | 11 h 54 | 71 | Strong coverage |
| April | 25.5°C | 11.7°C | 57 mm | 4.4 | 12 h 53 | 85 | Strong coverage |
| May | 29°C | 16.8°C | 106 mm | 6.6 | 13 h 42 | 67 | Strong coverage |
| June | 32.6°C | 20.4°C | 88 mm | 5.2 | 14 h 08 | 52 | Strong coverage |
| July | 34.7°C | 22.1°C | 53 mm | 3.5 | 13 h 58 | 49 | Strong coverage |
| August | 35.1°C | 21.9°C | 52 mm | 4 | 13 h 16 | 48 | Strong coverage |
| September | 31.2°C | 18.4°C | 87 mm | 5.1 | 12 h 19 | 61 | Strong coverage |
| October | 26.3°C | 12.7°C | 90 mm | 4.7 | 11 h 22 | 79 | Strong coverage |
| November | 20.2°C | 6.9°C | 72 mm | 4.9 | 10 h 33 | 66 | Strong coverage |
| December | 16°C | 2.4°C | 50 mm | 4.6 | 10 h 10 | 47 | Strong coverage |
What has changed
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 35.0°C31 Jan 1911 | -20.0°C30 Jan 1949 | 77 mm20 Jan 1968 | 222 mm1968 · driest 0 mm in 1951 | 114 |
| February | 37.8°C25 Feb 1918 | -18.3°C16 Feb 2021 | 64 mm1 Feb 1941 | 180 mm1903 · driest 0 mm in 2007 | 117 |
| March | 37.8°C28 Mar 1971 | -11.1°C2 Mar 1980 | 116 mm30 Mar 1910 | 199 mm2007 · driest 0 mm in 1956 | 117 |
| April | 38.9°C18 Apr 1925 | -2.8°C16 Apr 1961 | 123 mm13 Apr 1948 | 326 mm1957 · driest 3 mm in 1920 | 119 |
| May | 40.0°C31 May 1921 | 1.1°C4 May 2013 | 106 mm10 May 1968 | 327 mm1975 · driest 10 mm in 1934 | 117 |
| June | 43.3°C17 Jun 1934 | 7.8°C3 Jun 1919 | 144 mm30 Jun 2002 | 390 mm1987 · driest 0 mm in 1947 | 118 |
| July | 45.6°C11 Jul 1917 | 12.2°C10 Jul 1976 | 334 mm5 Jul 2025 | 465 mm2025 · driest 0 mm in 2015 | 119 |
| August | 45.6°C18 Aug 1909 | 10.0°C29 Aug 2006 | 177 mm27 Aug 1974 | 356 mm1974 · driest 0 mm in 1952 | 121 |
| September | 42.2°C3 Sep 2000 | 3.3°C22 Sep 1983 | 249 mm27 Sep 1936 | 463 mm1936 · driest 0 mm in 2007 | 119 |
| October | 40.6°C14 Oct 1909 | -5.6°C31 Oct 1993 | 213 mm4 Oct 1959 | 318 mm2009 · driest 0 mm in 1952 | 115 |
| November | 33.3°C2 Nov 1934 | -9.4°C30 Nov 1979 | 98 mm17 Nov 2004 | 298 mm2004 · driest 0 mm in 1970 | 114 |
| December | 33.3°C24 Dec 1901 | -20.0°C23 Dec 1989 | 115 mm21 Dec 1997 | 224 mm1991 · driest 0 mm in 1917 | 113 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 2 | <1 | 13 | 2 |
| February | 3 | <1 | 8 | 2 |
| March | 10 | <1 | 3 | 3 |
| April | 19 | 5 | <1 | 2 |
| May | 26 | 14 | 0 | 4 |
| June | 29 | 25 | 0 | 3 |
| July | 30 | 30 | 0 | 2 |
| August | 30 | 28 | 0 | 2 |
| September | 28 | 20 | 0 | 2 |
| October | 21 | 7 | <1 | 3 |
| November | 7 | <1 | 4 | 2 |
| December | 2 | 0 | 11 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 29% | 15% | 5% | 12% | 12.4–18.9°C |
| February | 42% | 17% | 6% | 15% | 14.3–21.8°C |
| March | 62% | 16% | 6% | 11% | 19.0–25.7°C |
| April | 78% | 17% | 8% | 15% | 23.8–28.7°C |
| May | 78% | 22% | 11% | 20% | 27.2–31.7°C |
| June | 84% | 17% | 8% | 13% | 30.8–35.4°C |
| July | 88% | 12% | 5% | 9% | 32.4–37.8°C |
| August | 87% | 13% | 5% | 10% | 33.1–38.3°C |
| September | 83% | 17% | 8% | 16% | 29.4–35.1°C |
| October | 81% | 15% | 7% | 14% | 24.7–29.9°C |
| November | 57% | 16% | 6% | 13% | 18.0–23.8°C |
| December | 32% | 15% | 5% | 13% | 13.6–19.7°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