September
September · June · August
United States · 1991–2020
September leads for comfortable weather in Robbinsdale: typically 23°C by day, 11.2°C at night, with 77 mm of rain. Based on measured 1991–2020 NOAA station history.
September · June · August
July · August · June
September · May · October
The weakest month is January, scoring 5 against September’s 80 — days reach only -4.4°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 | -4.4°C | -13.2°C | 5 mm | 1.4 | 9 h 07 | 5 | Good coverage |
| February | -2.2°C | -11.6°C | 9 mm | 2.1 | 10 h 20 | 5 | Good coverage |
| March | 5.3°C | -4.8°C | 25 mm | 4.2 | 11 h 46 | 5 | Good coverage |
| April | 13.8°C | 2°C | 68 mm | 8 | 13 h 25 | 34 | Good coverage |
| May | 20.7°C | 8.6°C | 104 mm | 9.4 | 14 h 49 | 62 | Good coverage |
| June | 25.9°C | 14.4°C | 111 mm | 9.8 | 15 h 36 | 76 | Good coverage |
| July | 28.9°C | 17.3°C | 90 mm | 7.5 | 15 h 17 | 68 | Good coverage |
| August | 27.2°C | 15.8°C | 96 mm | 7.3 | 14 h 04 | 76 | Good coverage |
| September | 23°C | 11.2°C | 77 mm | 7 | 12 h 28 | 80 | Good coverage |
| October | 14.4°C | 3.7°C | 60 mm | 6.9 | 10 h 53 | 41 | Good coverage |
| November | 6.1°C | -3.1°C | 26 mm | 3.7 | 9 h 29 | 8 | Good coverage |
| December | -1.9°C | -10°C | 13 mm | 2.3 | 8 h 47 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 12.8°C8 Jan 2003 | -33.8°C30 Jan 2019 | 14 mm29 Jan 2001 | 27 mm2001 · driest 0 mm in 2015 | 29 |
| February | 21.1°C19 Feb 2017 | -30.5°C15 Feb 2021 | 24 mm14 Feb 2023 | 43 mm2023 · driest 0 mm in 2000 | 28 |
| March | 27.2°C26 Mar 2007 | -26.6°C2 Mar 2014 | 40 mm31 Mar 2023 | 71 mm2023 · driest 0 mm in 2014 | 29 |
| April | 32.8°C15 Apr 2002 | -13.8°C5 Apr 2018 | 67 mm22 Apr 2001 | 171 mm2001 · driest 11 mm in 2018 | 29 |
| May | 38.3°C28 May 2018 | -3.3°C3 May 2005 | 62 mm8 May 2006 | 246 mm2012 · driest 9 mm in 2009 | 29 |
| June | 38.9°C20 Jun 2022 | 3.3°C5 Jun 2000 | 85 mm24 Jun 2003 | 228 mm2025 · driest 24 mm in 2022 | 29 |
| July | 38.3°C31 Jul 2006 | 8.3°C19 Jul 2009 | 66 mm5 Jul 2016 | 240 mm2002 · driest 27 mm in 2006 | 29 |
| August | 37.2°C22 Aug 2023 | 3.3°C21 Aug 2004 | 74 mm5 Aug 2024 | 181 mm2024 · driest 10 mm in 2003 | 28 |
| September | 36.7°C4 Sep 2023 | -2.8°C24 Sep 2000 | 90 mm20 Sep 2018 | 232 mm2005 · driest 6 mm in 2024 | 28 |
| October | 32.8°C4 Oct 2025 | -10.0°C27 Oct 1997 | 61 mm2 Oct 2017 | 121 mm2007 · driest 10 mm in 2022 | 29 |
| November | 25.6°C2 Nov 2022 | -19.3°C27 Nov 2014 | 46 mm6 Nov 2000 | 103 mm2000 · driest 0 mm in 1999 | 29 |
| December | 19.4°C1 Dec 1998 | -28.8°C18 Dec 2016 | 25 mm31 Dec 2006 | 64 mm2023 · driest 0 mm in 2010 | 29 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 30 | 0 |
| February | 0 | 0 | 27 | <1 |
| March | <1 | 0 | 24 | <1 |
| April | 1 | <1 | 11 | 2 |
| May | 7 | 2 | 1 | 3 |
| June | 19 | 6 | 0 | 4 |
| July | 27 | 12 | 0 | 3 |
| August | 24 | 7 | 0 | 3 |
| September | 12 | 3 | <1 | 2 |
| October | 2 | <1 | 9 | 2 |
| November | 0 | 0 | 22 | <1 |
| December | 0 | 0 | 29 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 5% | <1% | 3% | -7.6–-1.9°C |
| February | <1% | 8% | <1% | 6% | -6.6–2.4°C |
| March | 4% | 16% | 3% | 15% | 1.1–10.0°C |
| April | 17% | 28% | 8% | 31% | 10.7–16.3°C |
| May | 43% | 29% | 10% | 38% | 18.5–23.5°C |
| June | 64% | 32% | 12% | 39% | 24.4–28.5°C |
| July | 75% | 25% | 9% | 23% | 27.1–30.7°C |
| August | 75% | 24% | 12% | 26% | 25.8–28.8°C |
| September | 59% | 22% | 7% | 25% | 21.2–25.2°C |
| October | 19% | 22% | 6% | 18% | 11.2–17.4°C |
| November | 4% | 13% | 3% | 12% | 2.0–10.3°C |
| December | 0% | 9% | 2% | 5% | -5.2–1.4°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