China · 1991–2020

Best time to visit
Zhanglan.

May leads for comfortable weather in Zhanglan: typically 26.3°C by day, 11.2°C at night, with 33 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high26.3°C

Typical low11.2°C

Rain in May33 mm

Comfort

May

May · September · April

84climate match

Beach

June

June · August · July

75climate match

Outdoors

April

April · October · May

88climate match

The weakest month is January, scoring 5 against May’s 84 — days reach only 3°C, 21° below the 24°C the score treats as ideal, and nights drop to -9.4°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

53° / -9.4°

Feb

87.5° / -5.8°

Mar

4014° / 0°

Apr

7321° / 6°

May

8426.3° / 11.2°

Jun

7330.2° / 15.6°

Jul

5130.9° / 19°

Aug

6528.8° / 17.3°

Sep

8424.4° / 11.7°

Oct

6118.6° / 5.3°

Nov

2710.8° / -1.5°

Dec

54.3° / -7.1°

Monthly climate evidence for Zhanglan — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3°C	-9.4°C	4 mm	1.1	9 h 52	5	Good coverage
February	7.5°C	-5.8°C	6 mm	1.5	10 h 46	8	Good coverage
March	14°C	0°C	11 mm	2.5	11 h 51	40	Good coverage
April	21°C	6°C	29 mm	4.4	13 h 06	73	Good coverage
May	26.3°C	11.2°C	33 mm	4.9	14 h 08	84	Good coverage
June	30.2°C	15.6°C	51 mm	6.5	14 h 42	73	Good coverage
July	30.9°C	19°C	129 mm	9.9	14 h 29	51	Strong coverage
August	28.8°C	17.3°C	111 mm	8.2	13 h 35	65	Good coverage
September	24.4°C	11.7°C	72 mm	7.2	12 h 22	84	Strong coverage
October	18.6°C	5.3°C	46 mm	5.4	11 h 10	61	Strong coverage
November	10.8°C	-1.5°C	14 mm	2.5	10 h 08	27	Good coverage
December	4.3°C	-7.1°C	3 mm	0.9	9 h 37	5	Good coverage

What has changed

Zhanglan runs +2.3°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

+2.2

Feb

+3.1

Mar

+4.4

Apr

+2.9

May

+2.1

Jun

+2.0

Jul

+1.8

Aug

+2.0

Sep

+2.1

Oct

+1.3

Nov

+2.1

Dec

+1.6

May daytime highs, 2011–2025. Last recorded: 29.4°C.

Records at JIEXIU, 1954–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.0°C30 Jan 2014	-24.5°C6 Jan 1955	8 mm13 Jan 1957	15 mm1972 · driest 0 mm in 1970	72
February	22.9°C13 Feb 1996	-22.6°C1 Feb 1990	18 mm28 Feb 2021	26 mm1976 · driest 0 mm in 1999	72
March	30.2°C18 Mar 2009	-11.9°C6 Mar 1988	32 mm29 Mar 1979	47 mm1979 · driest 0 mm in 1962	72
April	36.3°C30 Apr 2006	-6.8°C1 Apr 1972	36 mm22 Apr 1969	89 mm1969 · driest 1 mm in 1985	72
May	39.3°C21 May 2025	-1.3°C2 May 1991	57 mm14 May 1983	146 mm1963 · driest 1 mm in 1979	72
June	40.6°C22 Jun 2005	4.7°C2 Jun 1993	145 mm30 Jun 2020	170 mm2020 · driest 3 mm in 2011	72
July	39.6°C12 Jul 2017	10.4°C28 Jul 1989	121 mm6 Jul 1963	326 mm2016 · driest 15 mm in 2002	72
August	38.4°C1 Aug 2021	9.1°C31 Aug 2008	85 mm15 Aug 1981	344 mm2020 · driest 16 mm in 1997	72
September	36.8°C1 Sep 2002	-0.5°C26 Sep 1995	71 mm20 Sep 2005	237 mm1985 · driest 6 mm in 1994	71
October	31.1°C3 Oct 2016	-6.5°C27 Oct 1997	90 mm5 Oct 2021	241 mm2021 · driest 1 mm in 1979	71
November	28.0°C1 Nov 2023	-22.6°C27 Nov 1960	21 mm10 Nov 2009	45 mm1962 · driest 0 mm in 2002	71
December	21.3°C8 Dec 2023	-24.2°C10 Dec 1954	18 mm10 Dec 1994	22 mm2023 · driest 0 mm in 1987	71

Typical days per month at JIEXIU, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	29	0
February	0	0	25	0
March	<1	0	15	<1
April	7	1	2	<1
May	20	7	<1	1
June	27	17	0	2
July	29	20	0	3
August	27	13	0	4
September	14	2	0	2
October	2	0	3	1
November	0	0	19	<1
December	0	0	28	0

The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 87); on 2011–2025 it is September (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in JIEXIU’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	0%	4%	0%	2%	-0.2–5.6°C
February	<1%	7%	<1%	3%	3.1–9.3°C
March	10%	10%	<1%	4%	10.4–16.6°C
April	51%	15%	3%	9%	17.9–22.7°C
May	79%	16%	5%	11%	24.0–28.1°C
June	79%	21%	6%	20%	28.4–32.4°C
July	70%	31%	12%	33%	29.2–32.4°C
August	71%	29%	12%	31%	26.9–30.7°C
September	70%	23%	8%	21%	22.1–26.4°C
October	35%	16%	4%	10%	16.3–20.6°C
November	2%	9%	1%	4%	8.0–13.0°C
December	0%	4%	<1%	1%	1.5–6.2°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.

1954Each stripe is one year’s mean temperature against the 69-year average. Warmest: 2024. Coolest: 1967.2024

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1785135
NOAA station: CHM00053863 · JIEXIU
Station distance: 16.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 37.12°, 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.

These places read the same station, so their numbers are identical — distance from JIEXIU is what differs

Jiexiu→Gutao→Changshou→Zhupu→Zhukeng→Zhangjiazhuang→

Or put two places side by side: Zhanglan vs Jiexiu

Best time to visitZhanglan.

May

June

April

The whole year,without the guesswork.

Zhanglan runs +2.3°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Zhanglan.

The whole year,
without the guesswork.

Zhanglan runs +2.3°C
on the 1961–1990 baseline.

Nearby, measured,
and named.