September
September · June · August
83climate match
United States · 1991–2020
Best time to visit
Happy Canyon.
September leads for comfortable weather in Happy Canyon: typically 25.1°C by day, 7.8°C at night, with 35 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high25.1°C
Typical low7.8°C
Rain in September35 mm
July
July · August · June
66climate match
May
May · October · September
84climate match
The weakest month is January, scoring 5 against September’s 83 — days reach only 7.7°C, 16° below the 24°C the score treats as ideal, and nights drop to -8.2°C.
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
57.7° / -8.2°
Feb
78.2° / -7.3°
Mar
2612.3° / -3.5°
Apr
4015.3° / 0°
May
6620.5° / 5°
Jun
7626.8° / 9.8°
Jul
7030° / 13.1°
Aug
7128.8° / 12.3°
Sep
8325.1° / 7.8°
Oct
5718.4° / 1.3°
Nov
2812.5° / -3.8°
Dec
57.8° / -8.1°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 7.7°C | -8.2°C | 15 mm | 3.2 | 9 h 40 | 5 | Strong coverage |
| February | 8.2°C | -7.3°C | 19 mm | 3.8 | 10 h 39 | 7 | Strong coverage |
| March | 12.3°C | -3.5°C | 38 mm | 4.3 | 11 h 49 | 26 | Strong coverage |
| April | 15.3°C | 0°C | 52 mm | 5.3 | 13 h 11 | 40 | Strong coverage |
| May | 20.5°C | 5°C | 50 mm | 6.1 | 14 h 19 | 66 | Strong coverage |
| June | 26.8°C | 9.8°C | 58 mm | 6 | 14 h 56 | 76 | Strong coverage |
| July | 30°C | 13.1°C | 62 mm | 6.6 | 14 h 41 | 70 | Strong coverage |
| August | 28.8°C | 12.3°C | 64 mm | 7.4 | 13 h 43 | 71 | Strong coverage |
| September | 25.1°C | 7.8°C | 35 mm | 4 | 12 h 24 | 83 | Strong coverage |
| October | 18.4°C | 1.3°C | 21 mm | 3.3 | 11 h 06 | 57 | Strong coverage |
| November | 12.5°C | -3.8°C | 17 mm | 2.9 | 9 h 57 | 28 | Strong coverage |
| December | 7.8°C | -8.1°C | 16 mm | 3.3 | 9 h 24 | 5 | Strong coverage |
What has changed
Happy Canyon runs +0.8°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
+0.5
Feb
+0.1
Mar
+1.9
Apr
0.0
May
-0.9
Jun
+1.7
Jul
+0.6
Aug
+1.1
Sep
+1.7
Oct
0.0
Nov
+1.7
Dec
+1.6
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 22.8°C3 Jan 1997 | -38.3°C6 Jan 1913 | 24 mm24 Jan 1921 | 43 mm1915 · driest 0 mm in 2003 | 92 |
| February | 23.9°C3 Feb 2020 | -35.6°C11 Feb 1899 | 38 mm9 Feb 1995 | 51 mm1995 · driest 0 mm in 1980 | 91 |
| March | 27.8°C28 Mar 2022 | -28.9°C20 Mar 1927 | 76 mm19 Mar 2003 | 180 mm2003 · driest 0 mm in 1987 | 92 |
| April | 32.8°C27 Apr 1981 | -22.2°C8 Apr 1928 | 68 mm13 Apr 1967 | 201 mm1900 · driest 0 mm in 2002 | 92 |
| May | 34.4°C20 May 2020 | -13.9°C3 May 1907 | 90 mm12 May 2023 | 190 mm1969 · driest 2 mm in 1974 | 94 |
| June | 38.3°C16 Jun 2021 | -3.9°C1 Jun 1924 | 178 mm16 Jun 1965 | 256 mm1965 · driest 0 mm in 1980 | 93 |
| July | 38.9°C11 Jul 2022 | -1.1°C23 Jul 1895 | 75 mm27 Jul 2017 | 151 mm2014 · driest 0 mm in 1924 | 97 |
| August | 37.2°C9 Aug 1906 | 1.1°C26 Aug 1910 | 102 mm3 Aug 1897 | 206 mm1897 · driest 0 mm in 1924 | 92 |
| September | 38.3°C12 Sep 2021 | -11.7°C28 Sep 1984 | 71 mm15 Sep 2013 | 164 mm2013 · driest 0 mm in 1893 | 93 |
| October | 31.1°C26 Oct 2021 | -20.6°C26 Oct 1913 | 76 mm23 Oct 1906 | 138 mm1923 · driest 0 mm in 1980 | 92 |
| November | 29.4°C4 Nov 1995 | -27.8°C28 Nov 1976 | 32 mm18 Nov 1985 | 69 mm2024 · driest 0 mm in 1901 | 92 |
| December | 27.8°C3 Dec 2021 | -33.9°C31 Dec 1900 | 51 mm4 Dec 1913 | 136 mm1913 · driest 0 mm in 1990 | 94 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 28 | <1 | 4 |
| February | 0 | 0 | 26 | <1 | 4 |
| March | <1 | 0 | 24 | 1 | 3 |
| April | 1 | 0 | 16 | 2 | 3 |
| May | 8 | 1 | 4 | 2 | <1 |
| June | 19 | 9 | <1 | 2 | 0 |
| July | 27 | 17 | 0 | 2 | 0 |
| August | 26 | 13 | 0 | 2 | 0 |
| September | 18 | 6 | 1 | 1 | <1 |
| October | 6 | <1 | 12 | <1 | 1 |
| November | <1 | 0 | 23 | <1 | 3 |
| December | 0 | 0 | 28 | <1 | 4 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | <1% | 9% | <1% | 3% | 4.6–10.1°C |
| February | 2% | 12% | 1% | 7% | 4.3–11.3°C |
| March | 10% | 15% | 3% | 9% | 8.0–15.2°C |
| April | 29% | 17% | 5% | 14% | 13.1–18.4°C |
| May | 54% | 22% | 6% | 23% | 18.0–23.7°C |
| June | 76% | 21% | 5% | 19% | 23.7–29.2°C |
| July | 74% | 25% | 7% | 29% | 27.3–32.2°C |
| August | 75% | 24% | 5% | 22% | 26.5–30.7°C |
| September | 79% | 13% | 4% | 8% | 22.5–27.7°C |
| October | 50% | 10% | 3% | 4% | 15.8–21.8°C |
| November | 14% | 9% | 2% | 3% | 9.3–15.4°C |
| December | 2% | 10% | 1% | 4% | 4.6–10.7°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 5424359
- NOAA station
- USC00051401 · CASTLE ROCK
- Station distance
- 5.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 39.43°, 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.