September
September · June · May
88climate match
United States · 1991–2020
Best time to visit
Belvedere.
September leads for comfortable weather in Belvedere: typically 25.1°C by day, 10.4°C at night, with 10 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high25.1°C
Typical low10.4°C
Rain in September10 mm
July
July · August · June
77climate match
May
May · September · June
89climate match
The weakest month is January, scoring 5 against September’s 88 — days reach only 0.7°C, 23° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
50.7° / -4.7°
Feb
54.5° / -3.6°
Mar
2610.5° / -0.3°
Apr
5216.2° / 3.4°
May
7821.7° / 7.8°
Jun
8625.7° / 11.2°
Jul
7631.1° / 15.1°
Aug
7730.8° / 14.7°
Sep
8825.1° / 10.4°
Oct
5315.9° / 4.6°
Nov
116.4° / -0.5°
Dec
50.9° / -4.3°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 0.7°C | -4.7°C | 29 mm | 6.6 | 8 h 46 | 5 | Strong coverage |
| February | 4.5°C | -3.6°C | 22 mm | 4.9 | 10 h 08 | 5 | Strong coverage |
| March | 10.5°C | -0.3°C | 28 mm | 5.8 | 11 h 44 | 26 | Strong coverage |
| April | 16.2°C | 3.4°C | 24 mm | 4.4 | 13 h 34 | 52 | Strong coverage |
| May | 21.7°C | 7.8°C | 29 mm | 4.9 | 15 h 09 | 78 | Strong coverage |
| June | 25.7°C | 11.2°C | 28 mm | 4.5 | 16 h 01 | 86 | Strong coverage |
| July | 31.1°C | 15.1°C | 13 mm | 2.2 | 15 h 40 | 76 | Strong coverage |
| August | 30.8°C | 14.7°C | 8 mm | 1.5 | 14 h 18 | 77 | Strong coverage |
| September | 25.1°C | 10.4°C | 10 mm | 2.3 | 12 h 31 | 88 | Strong coverage |
| October | 15.9°C | 4.6°C | 23 mm | 4.6 | 10 h 44 | 53 | Strong coverage |
| November | 6.4°C | -0.5°C | 29 mm | 6.3 | 9 h 10 | 11 | Strong coverage |
| December | 0.9°C | -4.3°C | 37 mm | 7.1 | 8 h 23 | 5 | Strong coverage |
What has changed
Belvedere runs +0.3°C
on the 1961–1990 baseline.
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.
Jan
+0.3
Feb
-1.0
Mar
+0.3
Apr
-0.2
May
+0.8
Jun
-0.1
Jul
+1.4
Aug
+1.1
Sep
+1.1
Oct
-0.1
Nov
+0.1
Dec
+0.1
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 13.9°C31 Jan 1971 | -27.2°C30 Jan 1950 | 22 mm17 Jan 1945 | 64 mm1959 · driest 6 mm in 2007 | 89 |
| February | 16.1°C20 Feb 1995 | -26.1°C1 Feb 1950 | 25 mm17 Feb 1940 | 91 mm1940 · driest 0 mm in 2005 | 89 |
| March | 23.3°C30 Mar 1942 | -18.3°C4 Mar 2019 | 38 mm15 Mar 2012 | 105 mm2012 · driest 1 mm in 1969 | 90 |
| April | 33.3°C17 Apr 1936 | -6.7°C2 Apr 1936 | 28 mm16 Apr 2011 | 60 mm2023 · driest 0 mm in 1985 | 90 |
| May | 37.8°C30 May 1986 | -2.8°C1 May 1954 | 34 mm31 May 1941 | 140 mm1948 · driest 1 mm in 1938 | 89 |
| June | 44.4°C29 Jun 2021 | 2.2°C25 Jun 2001 | 59 mm27 Jun 1996 | 109 mm1937 · driest 0 mm in 2025 | 88 |
| July | 45.0°C27 Jul 1939 | 0.0°C4 Jul 1983 | 33 mm21 Jul 1965 | 75 mm1993 · driest 0 mm in 2017 | 89 |
| August | 43.3°C4 Aug 1961 | 3.3°C31 Aug 1951 | 31 mm4 Aug 1948 | 45 mm2014 · driest 0 mm in 2012 | 89 |
| September | 40.0°C2 Sep 1938 | -1.1°C23 Sep 1970 | 35 mm26 Sep 1948 | 53 mm1986 · driest 0 mm in 1935 | 91 |
| October | 32.2°C2 Oct 1935 | -12.2°C31 Oct 1984 | 35 mm16 Oct 2006 | 101 mm2016 · driest 0 mm in 1952 | 91 |
| November | 20.6°C9 Nov 1989 | -23.3°C30 Nov 1985 | 28 mm12 Nov 1973 | 100 mm1973 · driest 3 mm in 2004 | 90 |
| December | 18.9°C1 Dec 2021 | -26.7°C30 Dec 1968 | 24 mm2 Dec 1996 | 87 mm1996 · driest 2 mm in 2013 | 90 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 3 |
| February | 0 | 0 | 23 | <1 | 1 |
| March | 0 | 0 | 17 | <1 | <1 |
| April | <1 | 0 | 6 | <1 | 0 |
| May | 8 | 2 | <1 | <1 | 0 |
| June | 17 | 6 | 0 | <1 | 0 |
| July | 28 | 19 | 0 | <1 | 0 |
| August | 28 | 19 | 0 | <1 | 0 |
| September | 16 | 5 | <1 | <1 | 0 |
| October | 1 | 0 | 3 | <1 | 0 |
| November | 0 | 0 | 16 | <1 | <1 |
| December | 0 | 0 | 27 | <1 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 21% | 1% | 21% | -3.3–3.4°C |
| February | 0% | 18% | 1% | 16% | 0.8–7.0°C |
| March | 2% | 16% | 1% | 14% | 8.0–12.8°C |
| April | 21% | 14% | 2% | 9% | 13.8–18.9°C |
| May | 58% | 16% | 3% | 15% | 18.5–24.9°C |
| June | 81% | 15% | 2% | 12% | 23.1–28.8°C |
| July | 93% | 7% | <1% | 3% | 28.4–34.0°C |
| August | 93% | 7% | <1% | 3% | 27.2–33.1°C |
| September | 80% | 9% | 1% | 5% | 22.0–28.0°C |
| October | 23% | 14% | <1% | 13% | 14.2–19.1°C |
| November | <1% | 22% | 2% | 25% | 4.5–8.7°C |
| December | 0% | 25% | 2% | 27% | -1.9–4.0°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
Nearby, measured,
and named.
- Place identity
- GeoNames 5786918
- NOAA station
- USC00451767 · COULEE DAM 1 SW
- Station distance
- 10.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 48.05°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.