August
August · July · September
United States · 1991–2020
August leads for comfortable weather in Prosper: typically 20.1°C by day, 10.9°C at night, with 12 mm of rain. Based on measured 1991–2020 NOAA station history.
August · July · September
July · August · September
July · August · September
The weakest month is January, scoring 5 against August’s 80 — days reach only 12.4°C, 12° below the 24°C the score treats as ideal, and 231 mm of rain falls.
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 | 12.4°C | 4.1°C | 231 mm | 17.3 | 10.4°C | 9 h 19 | 5 | Strong coverage |
| February | 12.8°C | 3.9°C | 185 mm | 14.5 | 10.3°C | 10 h 27 | 12 | Strong coverage |
| March | 13.2°C | 4.4°C | 180 mm | 16.9 | 10.4°C | 11 h 47 | 13 | Strong coverage |
| April | 14.4°C | 5.5°C | 132 mm | 14.2 | 10.9°C | 13 h 20 | 28 | Strong coverage |
| May | 16.4°C | 7.7°C | 76 mm | 9.3 | 11.7°C | 14 h 38 | 50 | Strong coverage |
| June | 18.2°C | 9.5°C | 39 mm | 5.9 | 12.6°C | 15 h 21 | 68 | Strong coverage |
| July | 19.8°C | 11.1°C | 9 mm | 1.8 | 12.5°C | 15 h 04 | 79 | Strong coverage |
| August | 20.1°C | 10.9°C | 12 mm | 2.1 | 12.8°C | 13 h 57 | 80 | Strong coverage |
| September | 19.5°C | 9.3°C | 34 mm | 4 | 13.0°C | 12 h 27 | 74 | Strong coverage |
| October | 17.3°C | 7.3°C | 100 mm | 9.9 | 12.4°C | 10 h 57 | 49 | Strong coverage |
| November | 14.1°C | 5.5°C | 207 mm | 16 | 11.7°C | 9 h 39 | 14 | Strong coverage |
| December | 12.1°C | 3.8°C | 250 mm | 16.8 | 10.9°C | 9 h 00 | 5 | 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 | 23.9°C30 Jan 1976 | -9.4°C31 Jan 1950 | 102 mm18 Jan 1953 | 560 mm2006 · driest 23 mm in 1985 | 84 |
| February | 27.2°C12 Feb 1996 | -10.0°C5 Feb 1989 | 127 mm10 Feb 1961 | 430 mm2017 · driest 18 mm in 2021 | 85 |
| March | 25.6°C19 Mar 1986 | -6.1°C17 Mar 2022 | 98 mm2 Mar 1972 | 379 mm2012 · driest 30 mm in 2020 | 86 |
| April | 26.7°C30 Apr 2014 | -4.4°C20 Apr 1987 | 84 mm9 Apr 1971 | 288 mm1978 · driest 9 mm in 2021 | 86 |
| May | 27.8°C25 May 1950 | -1.1°C6 May 1965 | 67 mm9 May 2005 | 199 mm2005 · driest 3 mm in 2018 | 86 |
| June | 28.9°C12 Jun 2019 | 0.6°C6 Jun 1950 | 56 mm4 Jun 2010 | 124 mm2010 · driest 2 mm in 1951 | 85 |
| July | 29.4°C21 Jul 1978 | 2.8°C6 Jul 1949 | 29 mm1 Jul 1983 | 67 mm1947 · driest 0 mm in 2018 | 85 |
| August | 32.2°C15 Aug 2020 | 1.7°C23 Aug 1951 | 86 mm24 Aug 1977 | 112 mm1968 · driest 0 mm in 1967 | 85 |
| September | 34.4°C9 Sep 2020 | -2.8°C26 Sep 1947 | 56 mm30 Sep 2013 | 177 mm2013 · driest 0 mm in 1975 | 83 |
| October | 31.7°C20 Oct 1998 | -2.8°C9 Oct 1985 | 117 mm16 Oct 1947 | 389 mm1950 · driest 9 mm in 1987 | 83 |
| November | 26.1°C1 Nov 1966 | -6.1°C13 Nov 1978 | 159 mm18 Nov 1996 | 534 mm1973 · driest 28 mm in 1959 | 83 |
| December | 25.0°C15 Dec 1980 | -13.3°C21 Dec 1990 | 143 mm3 Dec 1987 | 532 mm1981 · driest 34 mm in 2020 | 82 |
| Month | Days 25°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 0 | 5 | 8 |
| February | <1 | 4 | 6 |
| March | 0 | 3 | 7 |
| April | <1 | <1 | 5 |
| May | <1 | 0 | 2 |
| June | <1 | 0 | 1 |
| July | <1 | 0 | <1 |
| August | <1 | 0 | <1 |
| September | 1 | 0 | <1 |
| October | <1 | <1 | 3 |
| November | 0 | 3 | 7 |
| December | 0 | 5 | 9 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 1% | 57% | 26% | 74% | 10.1–13.8°C |
| February | 2% | 54% | 23% | 71% | 10.7–14.7°C |
| March | 2% | 54% | 21% | 71% | 11.3–14.8°C |
| April | 3% | 42% | 13% | 56% | 12.4–15.4°C |
| May | 6% | 31% | 7% | 35% | 14.4–17.3°C |
| June | 13% | 20% | 4% | 19% | 16.1–18.9°C |
| July | 36% | 6% | <1% | 2% | 16.8–20.6°C |
| August | 43% | 8% | 1% | 7% | 17.3–21.2°C |
| September | 35% | 17% | 5% | 19% | 17.3–20.9°C |
| October | 13% | 32% | 11% | 43% | 15.8–18.5°C |
| November | 3% | 52% | 25% | 69% | 12.6–15.6°C |
| December | <1% | 55% | 26% | 73% | 10.1–14.0°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