Joniškis climate — normals and trends
Joniškis (Lithuania) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.6 °C and it receives 621 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 (17.6 °C on average) and the coldest is January (-4.3 °C). Rainfall peaks in July.
Joniškis averages 121 frost days, 1 hot days (≥ 30 °C) and 132 rainy days per year.
Joniškis 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 144 to 98 per year over the period.
The hottest day of the period reached 33.4 °C (on 4 August 2014) and the coldest -37.9 °C (on 8 February 1956).
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
JoniškisSiauliai
- coords
- 56.24°, 23.62°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.6°C
Average daily high
10.0°C
Average daily low
3.2°C
Annual rainfall
621mm
Sunshine / day
7.2h
Mean relative humidity
79%
Average peak wind
17.8km/h
Seasonal range
21.9°C
Frost days (< 0 °C)
121 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
78.6 cm
Average feels-like high
7.0 °C
Average feels-like low
-0.1 °C
Average peak gust
36.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.41 · 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
33.4 °C
4 August 2014
Coldest day
-37.9 °C
8 February 1956
Wettest day
72 mm
29 July 2024
Windiest day
53.5 km/h
14 January 1993
Strongest gust
109.4 km/h
18 October 1967
Hottest feels-like
36.4 °C
31 July 2002
Coldest feels-like
-43.1 °C
8 February 1956
Snowiest day
14.6 cm
25 November 1969
Sunniest day
17.0 h
8 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 | 3.7 °C | +5.8 °C | 75 mm | +37 mm |
| Feb | 0.3 °C | +1.6 °C | 17 mm | -15 mm |
| Mar | 8.6 °C | +5.3 °C | 18 mm | -17 mm |
| Apr | 13.3 °C | +3.1 °C | 44 mm | -2 mm |
| May | 14.1 °C | -2.2 °C | 95 mm | +38 mm |
| Jun | 19.2 °C | -0.7 °C | 100 mm | +31 mm |
| Jul | 23.1 °C | +1.3 °C | 152 mm | +70 mm |
| Aug | 20.5 °C | -0.6 °C | 58 mm | -17 mm |
| Sep | 19.5 °C | +3.1 °C | 49 mm | -4 mm |
| Oct | 10.9 °C | +0.7 °C | 71 mm | +22 mm |
| Nov | 4.7 °C | +0.8 °C | 19 mm | -27 mm |
| Dec | 4.0 °C | +3.7 °C | 34 mm | -8 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 Joniškis?
Joniškis has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.6 °C and it receives 621 mm of precipitation per year.
What is the hottest day ever recorded in Joniškis?
The hottest day measured in Joniškis between 1940 and 2025 was 4 August 2014, reaching 33.4 °C.
What is the coldest day in Joniškis?
The coldest day measured in Joniškis between 1940 and 2025 was 8 February 1956, at -37.9 °C.
Does it snow in Joniškis?
Yes. Joniškis gets on average 78.6 cm of snow per year and has around 121 frost days.
Has the climate of Joniškis warmed?
Yes: Joniškis warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Joniškis?
The wettest day measured in Joniškis between 1940 and 2025 was 29 July 2024, with 72 mm of rain in 24 hours.
What was the windiest day in Joniškis?
The windiest day measured in Joniškis between 1940 and 2025 was 14 January 1993, with winds reaching 53.5 km/h.
What is the warmest month in Joniškis?
The warmest month in Joniškis is July (17.6 °C on average); the coldest is January (-4.3 °C).
How much does it rain in Joniškis?
Joniškis receives on average 621 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Joniškis?
Joniškis gets on average 7.2 hours of sunshine per day, roughly 2,628 hours per year over 1940-2025.
What is the biggest single-day snowfall in Joniškis?
The heaviest 24-hour snowfall measured in Joniškis between 1940 and 2025 was 25 November 1969, with 14.6 cm.
Are there tropical nights in Joniškis?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Joniškis.
What was the most extreme apparent temperature in Joniškis?
In Joniškis, between 1940 and 2025, the highest apparent temperature reached 36.4 °C on 31 July 2002, and the lowest was -43.1 °C on 8 February 1956.
Compare Joniškis with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Joniškis