Climate averages 1991–2020
Barnaul weather
in September.
A mild, moderately wet month: the 5th warmest and the joint 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Barnaul: daytime highs average 16.0°C and nights cool to about 6.8°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 44 mm of rain on roughly 10 days, which makes September a moderately wet month (the joint 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average September day.
The nearest other city in this atlas is Biysk (135 km away). In September its highs average 17.3°C, 1.3°C warmer than Barnaul, with 49 mm of rain.
Among the 236 cities listed in Russia, Barnaul ranks joint 96th of 236 for the warmest September highs and joint 34th of 236 for the driest September (rainfall, lowest first). The mean September high of those 236 cities is 16.4°C; Barnaul is 0.3°C cooler than that mean.
From September to October, average highs fall by 8.4°C to 7.7°C, and monthly rainfall stays at 44 mm.
The annual picture
September in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Barnaul climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -13.0°C-19.9°C | -19.9°C | 24 | 7.0 | 8.18 h |
| February | -9.8°C-17.5°C | -17.5°C | 20 | 5.9 | 9.810 h |
| March | -1.9°C-10.5°C | -10.5°C | 24 | 6.7 | 11.812 h |
| April | 9.2°C-1.7°C | -1.7°C | 36 | 7.9 | 14.014 h |
| May | 17.8°C6.0°C | 6.0°C | 50 | 9.9 | 15.816 h |
| June | 23.2°C12.7°C | 12.7°C | 63 | 10.6 | 16.917 h |
| July | 24.7°C15.3°C | 15.3°C | 80 | 12.2 | 16.516 h |
| August | 22.7°C13.1°C | 13.1°C | 54 | 10.0 | 14.815 h |
| September, selected | 16.0°C6.8°C | 6.8°C | 44 | 9.6 | 12.813 h |
| October | 7.7°C0.1°C | 0.1°C | 44 | 9.8 | 10.611 h |
| November | -3.3°C-9.6°C | -9.6°C | 49 | 10.7 | 8.79 h |
| December | -10.0°C-17.0°C | -17.0°C | 38 | 10.2 | 7.68 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Biysk in SeptemberRussia · 135 kmHigh 17.3°C · Low 7.9°C · 49 mm rain
- Berdsk in SeptemberRussia · 160 kmHigh 14.0°C · Low 7.9°C · 51 mm rain
- Novosibirsk in SeptemberRussia · 192 kmHigh 14.5°C · Low 7.0°C · 49 mm rain
- Kisilevsk in SeptemberRussia · 205 kmHigh 14.8°C · Low 6.1°C · 53 mm rain
- Kiselëvsk in SeptemberRussia · 205 kmHigh 14.9°C · Low 6.1°C · 53 mm rain
- Belovo in SeptemberRussia · 206 kmHigh 15.2°C · Low 6.6°C · 47 mm rain
- Prokop’yevsk in SeptemberRussia · 207 kmHigh 15.1°C · Low 6.3°C · 53 mm rain
- Leninsk-Kuznetsky in SeptemberRussia · 215 kmHigh 14.8°C · Low 6.3°C · 53 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Barnaul) is explained once on the Barnaul year overview and on the Sources, method and limits page.