Weather in Kostanay - 14-day forecast

Detailed weather forecast for Kostanay, Kazakhstan: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Kostanay

today☁️ 27°💧 1.8 mm

Sun☁️ 30°💧 0.6 mm

Mon🌤️ 30°💧 8.1 mm

Tue🌤️ 28°💧 0.2 mm

Wed☀️ 20°💧 0.2 mm

Thu🌤️ 20°💧 0.2 mm

Fri🌤️ 20°💧 0.2 mm

Sat☀️ 19°💧 0.7 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Monday 7 Sept in Kostanay, the forecast high is 30°C. Typical daytime temperatures at this time of year range from 16°C to 26°C, so it will be exceptionally warm. It is warmer than 92% of similar days.

Saturday 5 Sept

27°Cwarmer than usual

usually 17°C–26°C

warmer than 85% of similar days

night: exceptionally warm rain: more rain than usual wind: lighter than usual

Sunday 6 Sept

30°Cexceptionally warm

usually 17°C–26°C

warmer than 90% of similar days

night: exceptionally warm rain: more rain than usual wind: stronger than usual

Monday 7 Sept

30°Cexceptionally warm

usually 16°C–26°C

warmer than 92% of similar days

night: exceptionally warm rain: exceptionally wet wind: stronger than usual

Tuesday 8 Sept

28°Cexceptionally warm

usually 16°C–25°C

warmer than 90% of similar days

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Wednesday 9 Sept

20°Cnear normal

usually 16°C–25°C

night: warmer than usual rain: typical rainfall wind: exceptionally strong

Thursday 10 Sept

20°Cnear normal

usually 16°C–24°C

night: exceptionally warm rain: typical rainfall wind: lighter than usual

Friday 11 Sept

20°Cnear normal

usually 15°C–24°C

night: exceptionally warm rain: typical rainfall wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 21°C by day. The coolest year was 1998 (16°C) and the warmest was 2006 (28°C). The current forecast averages 25°C - higher than in 84% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Kostanay

Kostanay - 14-day weather forecast infographic

Kostanay 30 & 45-day weather - long-range outlook

Next 16 days · forecast

22°

around 16° at night · days with rain: 2

Weeks 3-4 · avg for September

19°

around 6° at night · rain chance 43%

Weeks 5-7 · avg for October

8°

around -1° at night · rain chance 56%

The 30 & 45-day outlook for Kostanay: the next 16 days are a numerical forecast updated daily - on average 22° by day and 16° at night. Further out we rely on multi-year climate averages: around 19° in September, and about 8° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Kostanay

Saturday5 September 2026

☁️27°overcast clouds

sunrise 06:01 · sunset 19:27 · night 21° · evening 26° · rain 1.79 mm · humidity 23% · wind 4 m/s · clouds 100%

Sunday6 September 2026

☁️30°overcast clouds

sunrise 06:03 · sunset 19:24 · night 21° · evening 27° · rain 0.62 mm · humidity 19% · wind 8 m/s · clouds 100%

Monday7 September 2026

🌤️30°scattered clouds

sunrise 06:04 · sunset 19:22 · night 21° · evening 28° · rain 8.13 mm · humidity 14% · wind 8 m/s · clouds 32%

Tuesday8 September 2026

🌤️28°scattered clouds

sunrise 06:06 · sunset 19:19 · night 22° · evening 30° · rain 0.16 mm · humidity 22% · wind 9 m/s · clouds 33%

Wednesday9 September 2026

☀️20°clear sky

sunrise 06:08 · sunset 19:17 · night 12° · evening 20° · rain 0.23 mm · humidity 39% · wind 10 m/s · clouds 1%

Thursday10 September 2026

🌤️20°scattered clouds

sunrise 06:10 · sunset 19:15 · night 16° · evening 23° · rain 0.24 mm · humidity 38% · wind 5 m/s · clouds 33%

Friday11 September 2026

🌤️20°scattered clouds

sunrise 06:11 · sunset 19:12 · night 16° · evening 22° · rain 0.24 mm · humidity 39% · wind 6 m/s · clouds 43%

Saturday12 September 2026

☀️19°clear sky

sunrise 06:13 · sunset 19:10 · night 15° · evening 21° · rain 0.72 mm · humidity 49% · wind 8 m/s · clouds 5%

Sunday13 September 2026

🌤️22°scattered clouds

sunrise 06:15 · sunset 19:07 · night 17° · evening 24° · rain 0.57 mm · humidity 47% · wind 7 m/s · clouds 34%

Monday14 September 2026

☁️23°broken clouds

sunrise 06:16 · sunset 19:05 · night 18° · evening 26° · rain 0.91 mm · humidity 30% · wind 7 m/s · clouds 60%

Tuesday15 September 2026

☁️25°broken clouds

sunrise 06:18 · sunset 19:03 · night 20° · evening 27° · rain 0.33 mm · humidity 21% · wind 8 m/s · clouds 57%

Wednesday16 September 2026

☁️17°overcast clouds

sunrise 06:20 · sunset 19:00 · night 14° · evening 19° · rain 0.4 mm · humidity 57% · wind 5 m/s · clouds 100%

Thursday17 September 2026

☁️13°overcast clouds

sunrise 06:22 · sunset 18:58 · night 9° · evening 14° · rain 0.55 mm · humidity 67% · wind 5 m/s · clouds 99%

Friday18 September 2026

☀️18°clear sky

sunrise 06:23 · sunset 18:55 · night 15° · evening 21° · humidity 43% · wind 7 m/s · clouds 10%

Saturday19 September 2026

☁️20°broken clouds

sunrise 06:25 · sunset 18:53 · night 12° · evening 22° · humidity 48% · wind 6 m/s · clouds 84%

Sunday20 September 2026

🌧️12°light rain

sunrise 06:27 · sunset 18:50 · night 9° · evening 13° · rain 0.67 mm · humidity 67% · wind 7 m/s · clouds 100%

UV index in Kostanay - is it safe to sunbathe?

Today the UV index in Kostanay is 4 (moderate) - unprotected fair skin can burn in about 50 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

Kostanay weather through the year

Warmest, driest months on average: May, June, July, August.

Nearby and related places

ChelyabinskPetropavlovskUfaAqtobeAstanaOmskPermKyzylordaKaragandyOralOskemen

FAQ - Kostanay weather

What is the weather like in Kostanay today?

Today it is about 27° during the day and 21° at night, overcast clouds.

How far ahead can I check the forecast for Kostanay?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.