15-Day Weather Forecast - Ulaanbaatar

15-day weather forecast for Ulaanbaatar: temperatures from -1°C (30°F) to 28°C (82°F). Average daily high 17°C (63°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +21°C

15-Day Temperature Trend

21°7°TodaySep13°7°Tmrw17°2°Sun23°6°Mon25°10°Tue28°10°Wed24°12°Thu17°11°Fri16°7°Sat9°2°Sun10°-1°Mon10°0°Tue18°1°Wed18°7°Thu11°4°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +21°/+7°
    feels +18°0.1 mm · 61%16 km/hUV 3 · Mod
    06:2319:13
  • Sat, Sep 12Tomorrow
    +13°/+7°
    feels +9°0 mm · 2%17 km/hUV 3 · Mod
    06:2519:11
  • Sun, Sep 13Sun
    +17°/+2°
    feels +14°11 km/hUV 3 · Mod
    06:2619:09
  • Mon, Sep 14Mon
    +23°/+6°
    feels +20°12 km/hUV 3 · Mod
    06:2719:07
  • Tue, Sep 15Tue
    +25°/+10°
    feels +21°10 km/hUV 3 · Mod
    06:2919:05
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  • Wed, Sep 16Wed
    +28°/+10°
    feels +23°19 km/hUV 3 · Mod
    06:3019:03
  • Thu, Sep 17Thu
    +24°/+12°
    feels +21°0.3 mm · 11%13 km/hUV 3 · Mod
    06:3119:01
  • Fri, Sep 18Fri
    +17°/+11°
    feels +15°0.3 mm · 25%11 km/hUV 3 · Low
    06:3318:59
  • Sat, Sep 19Sat
    +16°/+7°
    feels +14°0.6 mm · 22%12 km/hUV 3 · Low
    06:3418:57
  • Sun, Sep 20Sun
    +9°/+2°
    feels +4°0 mm · 32%12 km/hUV 2 · Low
    06:3518:55
  • Mon, Sep 21Mon
    +10°/+-1°
    feels +6°0 mm · 23%12 km/hUV 2 · Low
    06:3718:53
  • Tue, Sep 22Tue
    +10°/+0°
    feels +7°0 mm · 18%9 km/hUV 2 · Low
    06:3818:51
  • Wed, Sep 23Wed
    +18°/+1°
    feels +15°0 mm · 14%9 km/hUV 3 · Low
    06:4018:49
  • Thu, Sep 24Thu
    +18°/+7°
    feels +15°0.3 mm · 12%10 km/hUV 1 · Low
    06:4118:47
  • Fri, Sep 25Fri
    +11°/+4°
    feels +7°1.5 mm · 8%16 km/hUV 3 · Low
    06:4218:45

Weather Insight

Ulaanbaatar's 15-day outlook ranges from a low of -1°C to a high of 28°C, with an average daytime high near 17°C. That's 1° above the long-term average high of 16°C for this time of year. It continues a recent pattern — 21 of the last 28 days with published data have run warmer than normal. Air quality is currently good (AQI 42), with no notable outdoor health concerns.

Today vs Normal

21°C+5° above normal

The long-term average high for today is 16°C.

21 of the last 28 days with published data ran above normal.

It continues that pattern - today's forecast is also running above normal.

2026-08-28: 15°C15°2026-08-29: 18°C18°2026-08-30: 20°C20°2026-08-31: 24°C24°2026-09-01: 27°C27°2026-09-02: 29°C29°2026-09-03: 28°C28°2026-09-04: 17°C17°2026-09-05: 18°C18°2026-09-06: 14°C14°2026-09-07: 14°C14°2026-09-08: 17°C17°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Extended Outlook for Ulaanbaatar

Over the next 15 days, Ulaanbaatar is forecast to see temperatures ranging from -2°C to 29°C, averaging a daily high of 17°C. The extended outlook indicates occasional showers on 6 days, with 3.1 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.