September
September · May · April
83climate match
China · 1991–2020
Best time to visit
Yonghedian.
September leads for comfortable weather in Yonghedian: typically 24.8°C by day, 10.8°C at night, with 61 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortSeptember
Typical high24.8°C
Typical low10.8°C
Rain in September61 mm
August
August · June · July
67climate match
April
April · October · September
87climate match
The weakest month is January, scoring 5 against September’s 83 — days reach only -1.3°C, 25° below the 24°C the score treats as ideal, and nights drop to -14.7°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
5-1.3° / -14.7°
Feb
53.5° / -10.8°
Mar
2210.6° / -3.8°
Apr
6519.4° / 4.1°
May
8025.7° / 10.5°
Jun
6329.3° / 15.7°
Jul
4830.5° / 19.1°
Aug
6029.5° / 17.4°
Sep
8324.8° / 10.8°
Oct
5617.4° / 2.8°
Nov
77.3° / -5.7°
Dec
5-0.5° / -12.8°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -1.3°C | -14.7°C | 2 mm | 0.6 | 9 h 33 | 5 | Good coverage |
| February | 3.5°C | -10.8°C | 4 mm | 0.9 | 10 h 35 | 5 | Good coverage |
| March | 10.6°C | -3.8°C | 9 mm | 1.9 | 11 h 49 | 22 | Good coverage |
| April | 19.4°C | 4.1°C | 23 mm | 3.5 | 13 h 14 | 65 | Good coverage |
| May | 25.7°C | 10.5°C | 57 mm | 6.1 | 14 h 26 | 80 | Good coverage |
| June | 29.3°C | 15.7°C | 117 mm | 10.4 | 15 h 05 | 63 | Good coverage |
| July | 30.5°C | 19.1°C | 147 mm | 11.1 | 14 h 49 | 48 | Good coverage |
| August | 29.5°C | 17.4°C | 119 mm | 9.7 | 13 h 48 | 60 | Good coverage |
| September | 24.8°C | 10.8°C | 61 mm | 6.6 | 12 h 25 | 83 | Good coverage |
| October | 17.4°C | 2.8°C | 31 mm | 3.3 | 11 h 03 | 56 | Good coverage |
| November | 7.3°C | -5.7°C | 39 mm | 2.8 | 9 h 51 | 7 | Good coverage |
| December | -0.5°C | -12.8°C | 79 mm | 2.8 | 9 h 16 | 5 | Strong coverage |
What has changed
Yonghedian runs +1.5°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
+1.8
Feb
+2.0
Mar
+3.2
Apr
+2.1
May
+0.8
Jun
+1.6
Jul
+1.6
Aug
+1.6
Sep
+1.4
Oct
+0.9
Nov
+1.3
Dec
+0.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 8.8°C4 Jan 2002 | -27.2°C7 Jan 2021 | 15 mm23 Jan 1973 | 27 mm1973 · driest 0 mm in 1991 | 76 |
| February | 20.7°C21 Feb 2021 | -23.7°C1 Feb 2000 | 30 mm14 Feb 2016 | 101 mm2016 · driest 0 mm in 1999 | 76 |
| March | 28.4°C18 Mar 2009 | -20.0°C2 Mar 1951 | 27 mm20 Mar 2003 | 42 mm2007 · driest 0 mm in 2001 | 76 |
| April | 34.3°C30 Apr 2020 | -8.7°C1 Apr 1972 | 37 mm27 Apr 2015 | 71 mm2015 · driest 0 mm in 1995 | 76 |
| May | 39.3°C19 May 2001 | -0.2°C1 May 2021 | 67 mm28 May 2003 | 119 mm2016 · driest 1 mm in 2018 | 76 |
| June | 41.3°C10 Jun 1961 | 6.6°C3 Jun 2017 | 79 mm8 Jun 1991 | 288 mm1991 · driest 3 mm in 2023 | 76 |
| July | 43.3°C14 Jul 2000 | 11.5°C2 Jul 2015 | 151 mm25 Jul 1962 | 399 mm2021 · driest 25 mm in 2000 | 76 |
| August | 38.9°C14 Aug 2009 | 6.4°C31 Aug 1972 | 98 mm16 Aug 1955 | 288 mm1955 · driest 20 mm in 2009 | 75 |
| September | 35.4°C1 Sep 2002 | -0.1°C29 Sep 2010 | 57 mm4 Sep 1956 | 121 mm2021 · driest 3 mm in 1998 | 75 |
| October | 32.8°C1 Oct 2022 | -10.6°C28 Oct 2002 | 50 mm2 Oct 2010 | 91 mm2010 · driest 0 mm in 1962 | 75 |
| November | 24.3°C1 Nov 2023 | -18.8°C29 Nov 1987 | 90 mm10 Nov 2015 | 356 mm2015 · driest 0 mm in 1988 | 75 |
| December | 12.3°C6 Dec 1968 | -24.7°C24 Dec 2012 | 70 mm1 Dec 2015 | 601 mm2015 · driest 0 mm in 2024 | 75 |
| 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 | 25 | <1 |
| April | 5 | <1 | 5 | <1 |
| May | 19 | 6 | 0 | 2 |
| June | 26 | 14 | 0 | 3 |
| July | 30 | 18 | 0 | 4 |
| August | 29 | 14 | 0 | 3 |
| September | 16 | 3 | 0 | 2 |
| October | <1 | 0 | 8 | 1 |
| November | 0 | 0 | 26 | <1 |
| December | 0 | 0 | 30 | 0 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 2% | <1% | 0% | -4.4–0.3°C |
| February | <1% | 5% | <1% | <1% | -0.8–5.6°C |
| March | 4% | 7% | <1% | 1% | 6.6–12.6°C |
| April | 42% | 12% | 2% | 5% | 16.9–21.7°C |
| May | 75% | 19% | 6% | 15% | 24.0–27.4°C |
| June | 71% | 30% | 11% | 35% | 27.2–31.2°C |
| July | 65% | 36% | 16% | 46% | 28.7–32.0°C |
| August | 69% | 32% | 14% | 36% | 27.5–31.0°C |
| September | 74% | 20% | 7% | 12% | 23.2–25.9°C |
| October | 29% | 12% | 3% | 3% | 15.5–19.2°C |
| November | <1% | 7% | 1% | 2% | 4.8–9.6°C |
| December | 0% | 3% | 1% | 1% | -3.1–1.9°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 2033321
- NOAA station
- CHM00054423 · CHENGDE
- Station distance
- 43.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 23 usable years
- Daylight
- Calculated from latitude 40.79°, 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.