September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Golden Valley: typically 24.5°C by day, 6.4°C at night, with 31 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
August · July · June
May · September · June
The weakest month is January, scoring 5 against September’s 82 — days reach only -5°C, 29° 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 | -5°C | -16.8°C | 6 mm | 2 | 8 h 52 | 5 | Good coverage |
| February | -0.6°C | -12.8°C | 12 mm | 2.4 | 10 h 11 | 5 | Good coverage |
| March | 5.8°C | -7.4°C | 16 mm | 2.7 | 11 h 45 | 5 | Good coverage |
| April | 14.8°C | -1.3°C | 37 mm | 4.9 | 13 h 32 | 38 | Good coverage |
| May | 21.2°C | 5°C | 57 mm | 6.7 | 15 h 04 | 66 | Good coverage |
| June | 25.4°C | 10.3°C | 85 mm | 7.7 | 15 h 55 | 76 | Good coverage |
| July | 29.5°C | 13.1°C | 71 mm | 7.2 | 15 h 34 | 70 | Good coverage |
| August | 30.1°C | 12.2°C | 43 mm | 5 | 14 h 15 | 72 | Good coverage |
| September | 24.5°C | 6.4°C | 31 mm | 3.8 | 12 h 30 | 82 | Good coverage |
| October | 15.6°C | -0.4°C | 36 mm | 3.9 | 10 h 47 | 44 | Good coverage |
| November | 4.2°C | -7.9°C | 21 mm | 3.3 | 9 h 15 | 5 | Good coverage |
| December | -1.5°C | -12.9°C | 7 mm | 2.5 | 8 h 29 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 15.0°C24 Jan 1981 | -41.1°C1 Jan 1968 | 17 mm1 Jan 1976 | 35 mm1967 · driest 0 mm in 1987 | 53 |
| February | 20.0°C26 Feb 1958 | -41.1°C1 Feb 1959 | 60 mm25 Feb 1998 | 93 mm1998 · driest 0 mm in 1970 | 53 |
| March | 27.2°C25 Mar 2007 | -35.6°C11 Mar 1998 | 31 mm24 Mar 1996 | 112 mm1987 · driest 0 mm in 2001 | 53 |
| April | 36.1°C21 Apr 1980 | -23.9°C1 Apr 1975 | 53 mm6 Apr 1997 | 119 mm1975 · driest 0 mm in 1988 | 53 |
| May | 37.2°C22 May 1980 | -11.7°C3 May 2005 | 104 mm12 May 1985 | 166 mm1962 · driest 3 mm in 1984 | 52 |
| June | 40.6°C29 Jun 2002 | -2.8°C3 Jun 1998 | 83 mm22 Jun 1957 | 228 mm2005 · driest 2 mm in 1961 | 52 |
| July | 42.8°C15 Jul 2002 | 1.7°C3 Jul 1967 | 106 mm18 Jul 1969 | 201 mm1969 · driest 9 mm in 1971 | 51 |
| August | 41.1°C17 Aug 2003 | -1.1°C27 Aug 1982 | 81 mm12 Aug 1999 | 128 mm1999 · driest 0 mm in 1988 | 53 |
| September | 42.2°C6 Sep 1978 | -10.6°C30 Sep 1974 | 60 mm15 Sep 1994 | 138 mm1977 · driest 3 mm in 1958 | 53 |
| October | 35.6°C1 Oct 2005 | -24.4°C30 Oct 1991 | 45 mm18 Oct 1994 | 163 mm1994 · driest 0 mm in 1965 | 52 |
| November | 27.8°C7 Nov 1999 | -31.7°C29 Nov 1985 | 25 mm27 Nov 2001 | 51 mm2000 · driest 0 mm in 1961 | 53 |
| December | 18.3°C5 Dec 1979 | -43.3°C23 Dec 1983 | 25 mm29 Dec 2006 | 34 mm1977 · driest 0 mm in 1986 | 53 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 31 | <1 | 3 |
| February | 0 | 0 | 27 | <1 | 3 |
| March | <1 | 0 | 28 | <1 | 2 |
| April | 3 | <1 | 18 | 1 | 1 |
| May | 9 | 2 | 7 | 2 | <1 |
| June | 16 | 5 | <1 | 3 | 0 |
| July | 25 | 14 | 0 | 3 | 0 |
| August | 25 | 16 | <1 | 1 | 0 |
| September | 14 | 6 | 4 | <1 | 0 |
| October | 4 | <1 | 16 | 1 | 1 |
| November | <1 | 0 | 28 | <1 | 3 |
| December | 0 | 0 | 31 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 9% | <1% | 3% | -12.4–-0.5°C |
| February | <1% | 9% | <1% | 4% | -8.5–3.3°C |
| March | 3% | 11% | 1% | 5% | -0.6–9.1°C |
| April | 20% | 17% | 5% | 16% | 8.4–18.1°C |
| May | 49% | 22% | 6% | 25% | 17.2–24.3°C |
| June | 65% | 29% | 10% | 33% | 22.6–27.9°C |
| July | 79% | 21% | 6% | 20% | 26.6–32.0°C |
| August | 81% | 18% | 5% | 14% | 25.4–31.9°C |
| September | 61% | 17% | 3% | 14% | 19.4–26.1°C |
| October | 28% | 11% | 3% | 7% | 12.0–17.9°C |
| November | 2% | 11% | 1% | 6% | -0.3–9.0°C |
| December | 0% | 9% | <1% | 5% | -7.5–2.0°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