Uliastai climate — normals and trends
Uliastai (Mongolia) has a dry-winter subarctic climate (Dwc) under the Köppen-Geiger classification. Its mean annual temperature is -3.1 °C and it receives 285 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (15.0 °C on average) and the coldest is January (-22.9 °C). Rainfall peaks in July.
Uliastai averages 241 frost days, 0 hot days (≥ 30 °C) and 64 rainy days per year.
Uliastai has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 251 to 231 per year over the period.
The hottest day of the period reached 32.0 °C (on 23 July 1999) and the coldest -48.0 °C (on 31 December 1968).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
UliastaiDzabkhan
- coords
- 47.74°, 96.84°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
-3.1°C
Average daily high
3.1°C
Average daily low
-9.7°C
Annual rainfall
285mm
Sunshine / day
10.5h
Mean relative humidity
57%
Average peak wind
12.1km/h
Seasonal range
37.9°C
Frost days (< 0 °C)
241 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
64 d/yr
Annual snowfall
57.3 cm
Average feels-like high
-0.6 °C
Average feels-like low
-13.8 °C
Average peak gust
30.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
16.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.19 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
32.0 °C
23 July 1999
Coldest day
-48.0 °C
31 December 1968
Wettest day
45 mm
9 July 1957
Windiest day
36.9 km/h
19 March 1956
Strongest gust
97.6 km/h
19 March 1956
Hottest feels-like
30.6 °C
23 July 2002
Coldest feels-like
-53.8 °C
31 December 1968
Snowiest day
11.8 cm
29 April 1990
Sunniest day
15.0 h
16 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -13.9 °C | +1.8 °C | 6 mm | +3 mm |
| Feb | -11.8 °C | -0.1 °C | 2 mm | -3 mm |
| Mar | -3.5 °C | +0.6 °C | 17 mm | +6 mm |
| Apr | 9.4 °C | +4.4 °C | 21 mm | +0 mm |
| May | 13.3 °C | +0.5 °C | 40 mm | +14 mm |
| Jun | 20.9 °C | +2.2 °C | 58 mm | +13 mm |
| Jul | 23.7 °C | +3.4 °C | 23 mm | -43 mm |
| Aug | 20.2 °C | +1.6 °C | 21 mm | -32 mm |
| Sep | 13.3 °C | +0.8 °C | 27 mm | -1 mm |
| Oct | 1.5 °C | -2.1 °C | 10 mm | -5 mm |
| Nov | -7.1 °C | +0.7 °C | 14 mm | +5 mm |
| Dec | -14.3 °C | +0.5 °C | 6 mm | +2 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Uliastai?
Uliastai has a dry-winter subarctic climate (Köppen Dwc). Over 1940-2025, the average annual temperature is -3.1 °C and it receives 285 mm of precipitation per year.
What is the hottest day ever recorded in Uliastai?
The hottest day measured in Uliastai between 1940 and 2025 was 23 July 1999, reaching 32.0 °C.
What is the coldest day in Uliastai?
The coldest day measured in Uliastai between 1940 and 2025 was 31 December 1968, at -48.0 °C.
Does it snow in Uliastai?
Yes. Uliastai gets on average 57.3 cm of snow per year and has around 241 frost days.
Has the climate of Uliastai warmed?
Yes: Uliastai warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Uliastai?
The wettest day measured in Uliastai between 1940 and 2025 was 9 July 1957, with 45 mm of rain in 24 hours.
What was the windiest day in Uliastai?
The windiest day measured in Uliastai between 1940 and 2025 was 19 March 1956, with winds reaching 36.9 km/h.
What is the warmest month in Uliastai?
The warmest month in Uliastai is July (15.0 °C on average); the coldest is January (-22.9 °C).
How much does it rain in Uliastai?
Uliastai receives on average 285 mm of precipitation per year, spread over about 64 rainy days.
Is it sunny in Uliastai?
Uliastai gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Uliastai?
The heaviest 24-hour snowfall measured in Uliastai between 1940 and 2025 was 29 April 1990, with 11.8 cm.
Are there tropical nights in Uliastai?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Uliastai.
What was the most extreme apparent temperature in Uliastai?
In Uliastai, between 1940 and 2025, the highest apparent temperature reached 30.6 °C on 23 July 2002, and the lowest was -53.8 °C on 31 December 1968.
Compare Uliastai with another city
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Nearby cities
The climate around Uliastai