Ulaanbaatar, Mongolia Weather
Ulaanbaatar hourly forecast: next 24 hours
Today's high of 67°F (19°C) is about 4°F (2°C) below the typical August high of 71°F (22°C).
Current conditions in detail
Ulaanbaatar weather tomorrow (Friday, August 28)
Tomorrow in Ulaanbaatar looks patchy rain nearby, with a high of 50° and an overnight low of 42°. There is a 91% chance of rain - plan accordingly. Winds top out near 12 mph, and the UV index reaches 4 (moderate).
Ulaanbaatar 14-day forecast
About the weather in Ulaanbaatar
Cold is the baseline in Ulaanbaatar, not the exception. Night-time lows sit at or below freezing in 7 months of the year, and the warmest month, July, still only averages 76°F (25°C) by day. January runs to -10°F (-24°C) after dark.
Ulaanbaatar weather: quick facts
- Hottest month: July - highs near 76°F (25°C)
- Coldest month: January - highs near 10°F (-12°C)
- Decade extremes (2015-2024): 100°F (38°C) high · -42°F (-41°C) low
- Wettest month: August (12 rainy days) · Sunniest: June (12.1 h sun/day)
- Climate type: humid continental
- Annual swing: 37°C between the average warmest and coolest month · day to night: 12°C
- Snow: about 15 days a year
- Months with freezing average lows: 7
- Average humidity: 58%
Temperatures through the year
January sits at the other end of the year: 10°F (-12°C) by day, -10°F (-24°C) at night. At its warmest, in July, Ulaanbaatar runs to 76°F (25°C) in the afternoon and back to 56°F (13°C) by dawn. Relative humidity averages 58% across the year, drier than about 88% of the cities we track.
Rain, sun and snow
Days and nights are about 12°C apart on average - wider than roughly 87% of the cities we track. 7 months average under 20 mm of rain, the longest unbroken stretch running October through April. The wettest month is August (3.5 inches (90 mm) across 12 days) and the driest January. The gridded 2015-2024 daily record for this location tops out at 100°F (38°C) and bottoms at -42°F (-41°C) - decade extremes, not all-time station records.
Season by season
Spring (March through May)
Spring in Ulaanbaatar is brisk and cold, with daytime highs averaging 49°F (10°C) and nights around 26°F (-4°C); rain comes on about 13 days over the three months, plus about 7 snowy days. Daylight is generous - around 11.3 hours of sun a day.
Summer (June through August)
Through summer, Ulaanbaatar settles into easy warmth: 73°F (23°C) by day, 52°F (11°C) after dark, and rain falls on around 33 of the 90 days. Daylight is generous - around 11.5 hours of sun a day.
Fall (September through November)
Through fall, Ulaanbaatar is brisk and cold: 43°F (6°C) by day, 24°F (-4°C) after dark, and rain comes on about 15 days over the three months, plus about 6 snowy days.
Winter (December through February)
Winter in Ulaanbaatar runs to hard cold, with daytime highs averaging 13°F (-11°C) and nights around -7°F (-22°C); precipitation is sparse, near 8 mm (0.3 in) for the season. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Average temperatures in Ulaanbaatar by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 10° | -10° | 1 | 0.1 in | 8.0 h/day | 70% |
| February | 18° | -4° | 1 | 0.1 in | 9.4 h/day | 66% |
| March | 36° | 14° | 2 | 0.3 in | 10.7 h/day | 46% |
| April | 49° | 27° | 5 | 0.7 in | 11.2 h/day | 41% |
| May | 62° | 36° | 6 | 1.1 in | 12.0 h/day | 42% |
| June | 72° | 49° | 9 | 2.1 in | 12.1 h/day | 53% |
| July | 76° | 56° | 12 | 3.4 in | 11.2 h/day | 62% |
| August | 71° | 51° | 12 | 3.5 in | 11.1 h/day | 68% |
| September | 61° | 40° | 8 | 1.6 in | 9.8 h/day | 63% |
| October | 44° | 26° | 4 | 0.5 in | 9.0 h/day | 55% |
| November | 25° | 7° | 4 | 0.4 in | 7.8 h/day | 60% |
| December | 11° | -6° | 1 | 0.1 in | 7.4 h/day | 68% |