August
Other strong months: July and September
85/100 weather score
United States · 1991–2020
Best time to visit
Superior
For Superior, August has the most comfortable weather in our climate comparison. Typical daytime highs are 23.8°C, nights average 14.4°C, and rainfall totals about 100 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthAugust
Typical daytime high23.8°C
Typical night-time low14.4°C
August rainfall100 mm
July
Other strong months: August and September
52/100 weather score
September
Other strong months: June and August
83/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
3 months fit your choices for Superior
The lowest comfort score is 5 out of 100. January, February, March, November and December share that score. In January, that is mainly because days reach only -5.3°C, 29° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Superior?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Superior?
August is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 23.8°C and 100 mm of rain.
What is the hottest month in Superior?
July is hottest in this record, with a typical daytime high of 24.6°C and a night-time low of 14.5°C.
Which month has the least rain?
January has the lowest monthly rainfall total at 22 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | -5.3°C | -14.5°C | 22 mm | 5.3 | 2.1°C | 8 h 56 | 5 | Strong coverage |
| February | -2.6°C | -12.3°C | 23 mm | 4.2 | 1.3°C | 10 h 13 | 5 | Strong coverage |
| March | 2.2°C | -6.1°C | 39 mm | 5.4 | 1.3°C | 11 h 45 | 5 | Strong coverage |
| April | 7.7°C | -0.3°C | 66 mm | 7.2 | 2.1°C | 13 h 30 | 10 | Strong coverage |
| May | 14.1°C | 4.9°C | 86 mm | 9.4 | 3.4°C | 15 h | 36 | Strong coverage |
| June | 19.5°C | 9.8°C | 113 mm | 9.7 | 6.5°C | 15 h 50 | 59 | Strong coverage |
| July | 24.6°C | 14.5°C | 99 mm | 8.4 | 13.0°C | 15 h 30 | 83 | Strong coverage |
| August | 23.8°C | 14.4°C | 100 mm | 8 | 17.0°C | 14 h 12 | 85 | Strong coverage |
| September | 19.2°C | 10.1°C | 86 mm | 8.1 | 14.6°C | 12 h 29 | 64 | Strong coverage |
| October | 11.7°C | 3.7°C | 80 mm | 7.9 | 9.9°C | 10 h 48 | 28 | Strong coverage |
| November | 4°C | -3.5°C | 54 mm | 6.4 | 6.1°C | 9 h 19 | 5 | Strong coverage |
| December | -2.6°C | -10.5°C | 33 mm | 5.5 | 3.5°C | 8 h 34 | 5 | Strong coverage |
What has changed
Recent daytime highs are
0.4°C warmer in Superior.
Each bar shows the difference between the 2011–2025 average daytime high and the 1961–1990 average for the same month at the same station. A blank month does not have enough older observations for a reliable comparison.
Jan
+1.7
Feb
+0.8
Mar
+0.9
Apr
-1.7
May
-0.9
Jun
-0.7
Jul
+0.3
Aug
+0.4
Sep
+1.1
Oct
-0.1
Nov
+0.6
Dec
+1.8
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 12.8°C24 Jan 1942 | -38.3°C29 Jan 1951 | 27 mm2 Jan 1941 | 80 mm1969 · driest 2 mm in 1963 | 116 |
| February | 15.6°C22 Feb 1961 | -38.9°C12 Feb 1967 | 34 mm24 Feb 1977 | 69 mm1922 · driest 1 mm in 1968 | 115 |
| March | 26.7°C28 Mar 1946 | -38.9°C1 Mar 1962 | 72 mm12 Mar 1977 | 213 mm1977 · driest 0 mm in 2026 | 114 |
| April | 33.3°C28 Apr 1952 | -18.9°C3 Apr 1954 | 91 mm15 Apr 1961 | 196 mm2001 · driest 6 mm in 1987 | 115 |
| May | 35.6°C31 May 1939 | -11.7°C3 May 1967 | 77 mm29 May 1913 | 209 mm2012 · driest 7 mm in 1976 | 118 |
| June | 36.7°C18 Jun 1995 | -3.9°C1 Jun 1964 | 111 mm20 Jun 2012 | 311 mm2012 · driest 8 mm in 1910 | 116 |
| July | 40.6°C14 Jul 1936 | 1.1°C8 Jul 1961 | 146 mm1 Jul 1958 | 254 mm1952 · driest 15 mm in 1936 | 115 |
| August | 37.2°C24 Aug 1948 | -0.6°C20 Aug 1950 | 109 mm9 Aug 1939 | 226 mm2010 · driest 5 mm in 1930 | 114 |
| September | 36.1°C8 Sep 1976 | -7.2°C13 Sep 1963 | 105 mm22 Sep 1924 | 215 mm1991 · driest 7 mm in 2020 | 115 |
| October | 31.7°C2 Oct 1992 | -12.8°C30 Oct 1925 | 101 mm3 Oct 2005 | 203 mm2005 · driest 0 mm in 1953 | 116 |
| November | 26.1°C6 Nov 2020 | -28.3°C28 Nov 1976 | 61 mm25 Nov 1993 | 122 mm1983 · driest 0 mm in 1916 | 117 |
| December | 15.6°C1 Dec 1962 | -35.6°C28 Dec 1917 | 46 mm5 Dec 1909 | 110 mm2019 · driest 1 mm in 1999 | 116 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 7 |
| February | 0 | 0 | 27 | <1 | 5 |
| March | 0 | 0 | 26 | 1 | 4 |
| April | <1 | 0 | 14 | 2 | 2 |
| May | 2 | <1 | 2 | 3 | 0 |
| June | 7 | 1 | 0 | 3 | 0 |
| July | 16 | 6 | 0 | 3 | 0 |
| August | 13 | 3 | 0 | 3 | 0 |
| September | 4 | <1 | <1 | 3 | 0 |
| October | <1 | <1 | 7 | 2 | <1 |
| November | 0 | 0 | 22 | 2 | 3 |
| December | 0 | 0 | 29 | <1 | 6 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 16% | 2% | 11% | -9.8–-2.4°C |
| February | 0% | 14% | 2% | 11% | -7.5–0.1°C |
| March | <1% | 17% | 4% | 15% | -1.4–5.1°C |
| April | 5% | 23% | 7% | 26% | 5.4–11.9°C |
| May | 19% | 29% | 10% | 36% | 12.0–17.7°C |
| June | 40% | 32% | 11% | 40% | 18.1–23.4°C |
| July | 63% | 26% | 9% | 28% | 22.6–27.3°C |
| August | 60% | 26% | 10% | 29% | 21.9–26.2°C |
| September | 33% | 27% | 9% | 31% | 16.6–20.9°C |
| October | 11% | 22% | 6% | 22% | 9.8–14.9°C |
| November | <1% | 20% | 4% | 18% | 0.8–6.8°C |
| December | 0% | 17% | 2% | 13% | -7.1–0.3°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 5275191
- NOAA station
- USC00478349 · SUPERIOR
- Station distance
- 2.5 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 46.72°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 21 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Superior is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work