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Baiyin weather by month: averages, rainfall & climate trends

Baiyin swings through a wide annual range, with 28.0°C between the monthly means of its warmest and coldest months. Rainfall is on the low side overall. Baiyin weather by month: average temperatures, rainfall, extremes and how the climate has changed since 1940.

Today vs average

−2.3°Chigh below average

11° / −1°Today
13° / 3°Average
see today in detail →

How it's changed

+0.8°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–49130frost days a year now (2016–2025) · 142 in the 1940sfrost days a year · 142 in the 1940s37days above 30°C a year now (2016–2025) · 27 in the 1940sdays above 30°C · 27 in the 1940s+0.8°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 5 mmhigh 0°low −12°February, rain 8 mmhigh 4°low −8°March, rain 14 mmhigh 11°low −1°April, rain 23 mmhigh 17°low 5°May, rain 32 mmhigh 22°low 10°June, rain 44 mmhigh 26°low 15°July, rain 76 mmhigh 28°low 17°August, rain 81 mmhigh 26°low 16°September, rain 60 mmhigh 21°low 11°October, rain 30 mmhigh 15°low 4°November, rain 9 mmhigh 8°low −4°December, rain 4 mmhigh 1°low −11°wettest month August, 81 mm · 386 mm a yearsee month by month →

Right now

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

Right now

−0.5°

−4°feels like
87%humidity
−2°dew point
4 km/hfrom SW
UV index0.2
sunrise07:16sunset18:20day length11h 04m
TodayClear11°−1°
ThuClear17°3°
FriClear17°4°
SatOvercast10°4°
SunOvercast7°3°
MonOvercast8°0°
TueOvercast6°1°

On this date: October 21

Today (forecast)
11° / −1°
Average for October 21
13° / 3°

High below average · −2.3°C

  • Highest since 1940: 21.2° · 1997
  • Lowest since 1940: −9.3° · 1994
  • One year ago: 13° / 5°

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 Baiyin is sampled from the ECMWF ERA5 reanalysis at 36.55°N, 104.17°E, with daily records since 1940.

Coordinates
36.55°N, 104.17°E
Time zone
Asia/Shanghai
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

19 of the last 30 days were warmer than the historical average for that date. Average difference: +0.5°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

July brings the year's peak warmth, with afternoons typically reaching 27.7°C and nights around 16.9°C. In a typical recent year, around 35 days reach 30°C or more. At the other extreme, January brings afternoon highs of about 0.2°C and typical overnight lows of −12.0°C. Frost shows up on around 130 mornings a year.

In total, Baiyin averages about 386 mm of precipitation a year; August is usually the wettest month (81 mm) and December the driest (4 mm).

Comparing the record's first decade with its most recent one, Baiyin now averages 0.8°C warmer than it did in the 1940s. Recent years have brought less rain as well. The last decade sits roughly 13% under the long-term average.

Climate graph (climograph)

July is the warmest month, January the coolest: a yearly swing of 28°C. Wettest month: August (~81 mm). Whole year averages ~386 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 46 rainy days a year: most in August (~9), fewest in December (almost none).

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.

Baiyin 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
January0.2°−12.0°5 mm19.8 h17.7° (2014)−25.8° (2008)
February4.0°−8.5°8 mm110.7 h20.5° (2010)−22.6° (1945)
March10.9°−1.4°14 mm211.7 h28.5° (2003)−17.6° (2010)
April17.3°5.0°23 mm312.9 h33.7° (1994)−10.9° (1969)
May22.2°10.4°32 mm413.9 h34.5° (1981)−1.9° (1982)
June26.1°14.8°44 mm514.5 h36.0° (1940)5.4° (1965)
July27.7°16.9°76 mm814.3 h39.1° (2010)10.2° (2000)
August25.9°15.6°81 mm913.4 h36.8° (1972)7.7° (1957)
September20.5°10.7°60 mm812.2 h33.4° (2005)0.7° (2015)
October14.7°4.1°30 mm411.0 h28.8° (2016)−12.5° (1994)
November7.6°−3.8°9 mm110.0 h21.8° (2023)−18.5° (1962)
December1.5°−10.5°4 mm09.5 h14.4° (2023)−24.9° (1991)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +0.8°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: +0.17°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

Dec–Feb is warming fastest: +0.21°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: 26.7 early in the record → 37.2 recently. Frost days: 142 → 130.

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 2010, coldest in 2008: 39.1°C / −25.8°C.

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

Annual rainfall

~386 mm/year on average. Last decade: −13% vs that average. Long-term trend: −14 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 Baiyin

Which is the warmest month in Baiyin?
On long-term average, the warmest month in Baiyin is July (mean daily temperature of about 22.2°C) and the coolest is January (about −5.8°C).
How does today's temperature in Baiyin compare to the historical average?
On October 21, 2026, Baiyin is forecast to reach a high of 11.0°C and a low of −1.1°C. The long-term average for this date (the full record since 1940) is a high of 13.3°C and a low of 2.9°C, so today's high is 2.3°C cooler than that average.
How much has Baiyin warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Baiyin is about 0.8°C warmer.
How much does it rain in Baiyin?
Baiyin receives about 386 mm of precipitation per year on long-term average, with August typically the wettest month.
What is the average temperature in Baiyin?
Over the full record (since 1940), the annual mean temperature in Baiyin is about 9.3°C. The warmest month is July and the coolest is January.
What are the average temperatures in Baiyin by month?
Average daily highs and lows for each month in Baiyin (°C, full record since 1940): January 0°/−12°, February 4°/−8°, March 11°/−1°, April 17°/5°, May 22°/10°, June 26°/15°, July 28°/17°, August 26°/16°, September 21°/11°, October 15°/4°, November 8°/−4°, December 1°/−11°.
What is the weather like in Baiyin in summer?
Summer in Baiyin (June to August) is warm. Afternoons run 26–28°C and nights 15–17°C; July is the warmest month. Rain picks up through the season: 5 rainy days and 44 mm in June, 9 days and 81 mm in August. It is the wettest season of the year.
What is the weather like in Baiyin in winter?
In winter, December through February, Baiyin is dry and cold, with afternoons close to freezing. Expect 0–4°C by day and −12 to −8°C at night, with January the coldest month. Hardly any rain or snow falls.
What is the weather like in Baiyin in spring?
In spring, March through May, Baiyin is fairly mild. March starts at 11°C by day and −1°C at night; by May it is 22°C and 10°C. Rain picks up through the season: 2 rainy days and 14 mm in March, 4 days and 32 mm in May.
What is the weather like in Baiyin in autumn?
In autumn, September through November, Baiyin is cool. September still brings 21°C afternoons and 11°C nights, November only 8°C and −4°C. Rain falls off from 60 mm on 8 days in September to 9 mm on 1 day in November.
How many days a year does it rain in Baiyin?
On long-term average, Baiyin has about 46 days a year with at least 2 mm of rain or snow. The annual total is roughly 386 mm.

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