Weather in Arvayheer - 14-day forecast

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

Forecast for the next days in Arvayheer

today🌧️ 12°💧 1.4 mm

Sun☁️ 12°💧 0.2 mm

Mon🌧️ 11°💧 0.8 mm

Tue🌧️ 15°💧 0.8 mm

Wed🌧️ 15°💧 5.2 mm

Thu☀️ 17°💧 0.8 mm

Fri☀️ 20°💧 0.7 mm

Sat☀️ 22°night 14°

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

Saturday 5 Sept in Arvayheer, the forecast high is 12°C. Typical daytime temperatures at this time of year range from 13°C to 21°C, so it will be cooler than usual. It is cooler than 86% of similar days.

Saturday 5 Sept

12°Ccooler than usual

usually 13°C–21°C

cooler than 86% of similar days

night: warmer than usual rain: more rain than usual wind: typical

Sunday 6 Sept

12°Ccooler than usual

usually 13°C–21°C

cooler than 85% of similar days

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

Monday 7 Sept

11°Ccooler than usual

usually 12°C–20°C

cooler than 83% of similar days

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

Tuesday 8 Sept

15°Cnear normal

usually 12°C–20°C

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

Wednesday 9 Sept

15°Cnear normal

usually 12°C–20°C

night: exceptionally warm rain: exceptionally wet wind: typical

Thursday 10 Sept

17°Cnear normal

usually 11°C–20°C

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

Friday 11 Sept

20°Cwarmer than usual

usually 11°C–20°C

warmer than 86% of similar days

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

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 16°C by day. The coolest year was 2011 (11°C) and the warmest was 2022 (23°C). The current forecast averages 15°C - lower than in 67% 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Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window.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 - Arvayheer

Arvayheer - 14-day weather forecast infographic

Day-by-day forecast for Arvayheer

Saturday5 September 2026

🌧️12°light rain

sunrise 06:33 · sunset 19:41 · night 7° · evening 10° · rain 1.43 mm · humidity 57% · wind 6 m/s · clouds 100%

Sunday6 September 2026

☁️12°broken clouds

sunrise 06:35 · sunset 19:39 · night 6° · evening 10° · rain 0.17 mm · humidity 43% · wind 5 m/s · clouds 64%

Monday7 September 2026

🌧️11°light rain

sunrise 06:36 · sunset 19:38 · night 8° · evening 10° · rain 0.8 mm · humidity 40% · wind 4 m/s · clouds 58%

Tuesday8 September 2026

🌧️15°light rain

sunrise 06:37 · sunset 19:36 · night 8° · evening 8° · rain 0.8 mm · humidity 33% · wind 5 m/s · clouds 68%

Wednesday9 September 2026

🌧️15°moderate rain

sunrise 06:38 · sunset 19:34 · night 9° · evening 11° · rain 5.23 mm · humidity 38% · wind 5 m/s · clouds 65%

Thursday10 September 2026

☀️17°clear sky

sunrise 06:40 · sunset 19:32 · night 11° · evening 13° · rain 0.78 mm · humidity 27% · wind 2 m/s · clouds 17%

Friday11 September 2026

☀️20°clear sky

sunrise 06:41 · sunset 19:30 · night 13° · evening 15° · rain 0.69 mm · humidity 20% · wind 3 m/s · clouds 2%

Saturday12 September 2026

☀️22°clear sky

sunrise 06:42 · sunset 19:28 · night 14° · evening 15° · humidity 18% · wind 6 m/s · clouds 3%

Sunday13 September 2026

🌤️22°scattered clouds

sunrise 06:43 · sunset 19:26 · night 14° · evening 16° · rain 0.12 mm · humidity 16% · wind 4 m/s · clouds 34%

Monday14 September 2026

☁️22°broken clouds

sunrise 06:45 · sunset 19:24 · night 15° · evening 16° · humidity 18% · wind 5 m/s · clouds 79%

Tuesday15 September 2026

☁️20°overcast clouds

sunrise 06:46 · sunset 19:22 · night 12° · evening 14° · rain 1.95 mm · humidity 25% · wind 9 m/s · clouds 100%

Wednesday16 September 2026

🌧️13°light rain

sunrise 06:47 · sunset 19:20 · night 6° · evening 6° · rain 2.55 mm · humidity 36% · wind 8 m/s · clouds 33%

Thursday17 September 2026

🌤️13°a few clouds

sunrise 06:48 · sunset 19:18 · night 7° · evening 9° · rain 2.37 mm · humidity 40% · wind 6 m/s · clouds 21%

Friday18 September 2026

☀️16°clear sky

sunrise 06:50 · sunset 19:16 · night 9° · evening 11° · humidity 27% · wind 3 m/s · clouds 81%

Saturday19 September 2026

☀️18°clear sky

sunrise 06:51 · sunset 19:14 · night 11° · evening 13° · humidity 24% · wind 2 m/s · clouds 1%

Sunday20 September 2026

🌧️19°light rain

sunrise 06:52 · sunset 19:12 · night 10° · evening 13° · rain 0.27 mm · humidity 24% · wind 6 m/s · clouds 42%

UV index in Arvayheer - is it safe to sunbathe?

Today the UV index in Arvayheer is 4 (moderate) - unprotected fair skin can burn in about 55 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

Upcoming public holidays in Mongolia: Chinggis Khaan Day — 10 November · Republic Day — 26 November · Independence Day — 29 December.

Nearby and related places

BulganUlaanbaatarMurunkurenUliastayKhovdSuhbaatar

FAQ - Arvayheer weather

What is the weather like in Arvayheer today?

Today it is about 12° during the day and 7° at night, light rain.

How far ahead can I check the forecast for Arvayheer?

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.