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Xinyuan weather by month: averages, rainfall & climate trends

Seasons run to extremes in Xinyuan: monthly means span 28.0°C between the coldest month and the warmest. Rainfall leans toward the stretch from April to August. Xinyuan weather by month: average temperatures, rainfall, extremes and how the climate has changed since 1940.

Today vs average

−0.4°Chigh near average

14° / 7°Today
15° / 0°Average
see today in detail →

How it's changed

+0.5°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–49145frost days a year now (2016–2025) · 154 in the 1940sfrost days a year · 154 in the 1940s17days above 30°C a year now (2016–2025) · 33 in the 1940sdays above 30°C · 33 in the 1940s+0.5°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 21 mmhigh 0°low −14°February, rain 24 mmhigh 3°low −12°March, rain 44 mmhigh 9°low −5°April, rain 73 mmhigh 16°low 3°May, rain 77 mmhigh 21°low 7°June, rain 70 mmhigh 24°low 11°July, rain 58 mmhigh 26°low 13°August, rain 49 mmhigh 26°low 12°September, rain 44 mmhigh 22°low 7°October, rain 43 mmhigh 16°low 2°November, rain 37 mmhigh 7°low −5°December, rain 25 mmhigh 1°low −11°wettest month May, 77 mm · 565 mm a yearsee month by month →

Right now

What it's doing today vs the historical average for this date.
Overcast

Right now

11.3°

8°feels like
38%humidity
−3°dew point
7 km/hfrom SW
UV index0.0
sunrise08:48sunset19:35day length10h 47m
TodayLight rain14°7°
ThuOvercast9°5°
FriOvercast5°2°
SatLight snow2°−2°
SunClear7°−4°
MonClear12°3°
TueClear17°6°

On this date: October 21

Today (forecast)
14° / 7°
Average for October 21
15° / 0°

High near average · −0.4°C

  • Highest since 1940: 24.4° · 1946
  • Lowest since 1940: −8.5° · 1976
  • One year ago: 20° / 1°

Every October 21 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 21 on record (n = 86). Outlined dots are today's forecast.

Area we sample

Each city's history comes from one ERA5 grid cell, about 28 km across, shown by the dashed box. Near mountains or coasts, conditions can vary across the cell.

Location & data

Historical weather for Xinyuan is sampled from the ECMWF ERA5 reanalysis at 43.43°N, 83.25°E, with daily records since 1940.

Coordinates
43.43°N, 83.25°E
Time zone
Asia/Urumqi
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

25 of the last 30 days were warmer than the historical average for that date. Average difference: +2.7°C.

Each bar is one day, from morning low to afternoon high. Warm-colored bars are days whose mean ran above average; cool bars ran below. The dot inside the bar is the daily mean. The shaded band is the typical 10–90% range expected for that date. Average = the day's mean temperature averaged across every year of record (1940–2026) for that calendar date.

This date over the years

One dot per year, showing the mean temperature on this calendar date. Dots are warmer or cooler than the long-term average (dashed line); the shaded band is the typical 10–90% range, and the highlighted dot is today's forecast. Based on ERA5 reanalysis: modelled estimates, not station readings.

Weather by month

Average temperatures and rainfall for each month: a typical year, from the full record.

Climate overview

The year peaks in July, at around 25.9°C by mid-afternoon, with nights around 13.0°C. At the other extreme, January brings afternoon highs of about 0.1°C and typical overnight lows of −13.8°C. Around 145 days a year dip below freezing.

In total, Xinyuan averages about 565 mm of precipitation a year; May is usually the wettest month (77 mm) and January the driest (21 mm).

The record here starts in 1940, and since then the annual mean in Xinyuan has climbed 0.5°C from the first ten years to the last ten. The count of days past 30°C has eased from roughly 35 a year to about 15 over the record.

Climate graph (climograph)

July is the warmest month, January the coolest: a yearly swing of 28°C. Wettest month: May (~77 mm). Whole year averages ~565 mm of rain.

Bars = average monthly rainfall (right axis). Lines = average daily high and low (left axis). Average = each month's value averaged across every year of record (1940–2026).

Rainy days by month

About 81 rainy days a year: most in May (~10), fewest in January (~4).

Bars = average number of days with ≥ 2 mm per month. Hover for the monthly rainfall total.

Monthly wind

Average daily peak wind at 10 m, by month.

Monthly solar energy

Average daily incoming solar energy in megajoules per square metre: the record's own proxy for how sunny the month is.

Xinyuan month by month: what to expect

Typical conditions for each month, averaged across the full record (since 1940). Daylight is the time from sunrise to sunset. Highest and Lowest are the most extreme values in the ERA5 dataset (modelled since 1940), so they can differ from official weather-station readings.

MonthAvg highAvg lowRainRainy daysDaylightHighestLowest
January0.1°−13.8°21 mm49.1 h12.4° (2022)−30.0° (2023)
February2.7°−12.0°24 mm410.3 h17.0° (1963)−28.7° (1951)
March8.9°−4.6°44 mm711.6 h24.5° (2018)−20.2° (1970)
April16.5°2.7°73 mm1013.2 h29.8° (2020)−13.3° (1966)
May20.7°7.4°77 mm1014.5 h31.9° (1946)−4.3° (1992)
June23.7°11.3°70 mm915.2 h35.6° (1945)1.3° (1985)
July25.9°13.0°58 mm714.9 h38.0° (1944)5.6° (1960)
August25.8°11.7°49 mm613.8 h38.2° (1944)1.7° (1996)
September22.1°7.4°44 mm612.3 h36.0° (1948)−2.0° (2017)
October15.8°1.6°43 mm710.8 h28.8° (2013)−13.3° (1953)
November7.5°−5.1°37 mm69.4 h21.7° (2017)−32.0° (1952)
December1.4°−11.0°25 mm48.8 h13.1° (1955)−27.7° (2023)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +0.5°C.

Each vertical stripe is one year. Color encodes how much that year's annual mean differed from the long-term average. Average = each year's annual mean compared to the average of all years (1940–2026). cooler ← → warmer

Annual mean temperature

Long-term trend: +0.11°C per decade.

One point per year, showing the temperature averaged across the whole year. The dashed line is the least-squares long-term trend. Based on ERA5 reanalysis: modelled estimates, not station readings.

Seasonal warming

Mar–May is warming fastest: +0.23°C per decade.

Each faint line is one three-month period's average per year; the bold dashed line is its long-term trend. Different parts of the year often warm at different rates. Based on ERA5 reanalysis: modelled estimates, not station readings.

Hot days vs frost days

Days ≥ 30°C per year: 32.5 early in the record → 16.7 recently. Frost days: 154 → 145.

Thin lines are raw yearly counts; thick lines are the smoothed trend that removes year-to-year noise. The hot-day threshold is auto-picked per city so the line actually moves. Average = a centered 5-year rolling average to smooth weather noise.

Yearly hot & cold extremes

Hottest day since 1940 in 1944, coldest in 1952: 38.2°C / −32.0°C.

One point per year: the single hottest and coldest day recorded that year.

Annual rainfall

~565 mm/year on average. Last decade: −4% vs that average. Long-term trend: +12 mm per decade.

One bar per year of total rainfall. Dashed line is the long-term average. Average = the average annual rainfall across every year of record (1940–2026).

Day-by-day grid

Each tiny square is one calendar day across the full record, about 30,000 days per city. Use the mode switch above the chart: Anomaly colors each day by how far it ran from the historical average for that date (red = warmer, blue = cooler), Daily mean temp shows the absolute mean temperature for the day (useful to see seasons and heatwaves), and Precipitation shows daily rainfall (useful to spot wet/dry seasons and droughts). Average = the long-term average for that calendar date (1940–2026).

Frequently asked questions about Xinyuan

Which is the warmest month in Xinyuan?
On long-term average, the warmest month in Xinyuan is July (mean daily temperature of about 20.1°C) and the coolest is January (about −7.9°C).
How does today's temperature in Xinyuan compare to the historical average?
On October 21, 2026, Xinyuan is forecast to reach a high of 14.2°C and a low of 6.5°C. The long-term average for this date (the full record since 1940) is a high of 14.6°C and a low of 0.3°C, so today's high is about equal to that average.
How much has Xinyuan warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Xinyuan is about 0.5°C warmer.
How much does it rain in Xinyuan?
Xinyuan receives about 565 mm of precipitation per year on long-term average, with May typically the wettest month.
What is the average temperature in Xinyuan?
Over the full record (since 1940), the annual mean temperature in Xinyuan is about 7.4°C. The warmest month is July and the coolest is January.
What are the average temperatures in Xinyuan by month?
Average daily highs and lows for each month in Xinyuan (°C, full record since 1940): January 0°/−14°, February 3°/−12°, March 9°/−5°, April 16°/3°, May 21°/7°, June 24°/11°, July 26°/13°, August 26°/12°, September 22°/7°, October 16°/2°, November 7°/−5°, December 1°/−11°.
What is the weather like in Xinyuan in summer?
Summer in Xinyuan (June to August) is pleasantly warm. Afternoons run 24–26°C and nights 11–13°C; July is the warmest month. Rain falls on about 7 days a month, adding up to around 59 mm.
What is the weather like in Xinyuan in winter?
December to February is winter in Xinyuan, and it is cold, with afternoons close to freezing. Expect 0–3°C by day and −14 to −11°C at night, with January the coldest month. Rain and snow fall on about 4 days a month, adding up to around 23 mm. No season is drier.
What is the weather like in Xinyuan in spring?
March to May is spring in Xinyuan, and it is fairly mild. March starts at 9°C by day and −5°C at night; by May it is 21°C and 7°C. Rain rises from 44 mm on 7 days in March to 77 mm on 10 days in May.
What is the weather like in Xinyuan in autumn?
In autumn, September through November, Xinyuan is fairly mild. September is still 22°C by day and 7°C at night; by November it is down to 7°C and −5°C. Rain is steady at around 42 mm a month, spread over roughly 6 days.
How many days a year does it rain in Xinyuan?
On long-term average, Xinyuan has about 81 days a year with at least 2 mm of rain or snow. The annual total is roughly 565 mm.

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