Lom climate — normals and trends
Lom (Bulgaria) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.0 °C and it receives 525 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 (25.2 °C on average) and the coldest is January (-0.4 °C). Rainfall peaks in May.
Lom averages 68 frost days, 59 hot days (≥ 30 °C) and 90 rainy days per year.
Lom has warmed by +2.6 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 85 to 51 per year over the period.
The hottest day of the period reached 45.9 °C (on 24 July 2007) and the coldest -28.6 °C (on 25 January 1942).
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
LomMontana
- coords
- 43.83°, 23.24°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.0°C
Average daily high
18.0°C
Average daily low
8.4°C
Annual rainfall
525mm
Sunshine / day
9.2h
Mean relative humidity
69%
Average peak wind
15.1km/h
Seasonal range
25.6°C
Frost days (< 0 °C)
68 d/yr
Hot days (≥ 30 °C)
59 d/yr
Rainy days (≥ 1 mm)
90 d/yr
Annual snowfall
56.9 cm
Average feels-like high
16.4 °C
Average feels-like low
6.5 °C
Average peak gust
29.8 km/h
Tropical nights (≥ 20 °C)
30 d/yr
Solar radiation
14.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.49 · 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
45.9 °C
24 July 2007
Coldest day
-28.6 °C
25 January 1942
Wettest day
62 mm
3 July 2017
Windiest day
48.9 km/h
22 March 2013
Strongest gust
88.2 km/h
2 April 1944
Hottest feels-like
46.0 °C
24 July 2007
Coldest feels-like
-34.1 °C
25 January 1942
Snowiest day
28.8 cm
17 January 1977
Sunniest day
15.0 h
24 June 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 | 9.8 °C | +6.8 °C | 7 mm | -34 mm |
| Feb | 5.8 °C | -0.4 °C | 13 mm | -25 mm |
| Mar | 18.8 °C | +6.6 °C | 58 mm | +10 mm |
| Apr | 20.6 °C | +1.8 °C | 34 mm | -19 mm |
| May | 24.3 °C | +0.3 °C | 53 mm | -3 mm |
| Jun | 34.9 °C | +6.6 °C | 4 mm | -49 mm |
| Jul | 36.3 °C | +5.2 °C | 9 mm | -30 mm |
| Aug | 34.3 °C | +3.1 °C | 15 mm | -13 mm |
| Sep | 29.3 °C | +3.0 °C | 14 mm | -17 mm |
| Oct | 17.5 °C | -1.4 °C | 132 mm | +91 mm |
| Nov | 12.1 °C | +1.1 °C | 87 mm | +37 mm |
| Dec | 7.7 °C | +2.7 °C | 63 mm | +16 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 Lom?
Lom has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 13.0 °C and it receives 525 mm of precipitation per year.
What is the hottest day ever recorded in Lom?
The hottest day measured in Lom between 1940 and 2025 was 24 July 2007, reaching 45.9 °C.
What is the coldest day in Lom?
The coldest day measured in Lom between 1940 and 2025 was 25 January 1942, at -28.6 °C.
Does it snow in Lom?
Yes. Lom gets on average 56.9 cm of snow per year and has around 68 frost days.
Has the climate of Lom warmed?
Yes: Lom warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Lom?
The wettest day measured in Lom between 1940 and 2025 was 3 July 2017, with 62 mm of rain in 24 hours.
What was the windiest day in Lom?
The windiest day measured in Lom between 1940 and 2025 was 22 March 2013, with winds reaching 48.9 km/h.
What is the warmest month in Lom?
The warmest month in Lom is July (25.2 °C on average); the coldest is January (-0.4 °C).
How much does it rain in Lom?
Lom receives on average 525 mm of precipitation per year, spread over about 90 rainy days.
Is it sunny in Lom?
Lom gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Lom?
The heaviest 24-hour snowfall measured in Lom between 1940 and 2025 was 17 January 1977, with 28.8 cm.
Are there tropical nights in Lom?
Yes: Lom has on average 30 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Lom?
In Lom, between 1940 and 2025, the highest apparent temperature reached 46.0 °C on 24 July 2007, and the lowest was -34.1 °C on 25 January 1942.
Compare Lom with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Lom