Weather in Siauliai - 14-day forecast

Detailed weather forecast for Siauliai, Lithuania: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Siauliai

today🌧️ 15°💧 12.5 mm

Sun🌧️ 16°💧 1.2 mm

Mon🌧️ 18°💧 1.3 mm

Tue☁️ 18°💧 0.3 mm

Wed🌧️ 18°💧 2.7 mm

Thu🌧️ 16°💧 0.7 mm

Fri🌧️ 17°💧 0.2 mm

Sat🌧️ 13°💧 4.3 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in Siauliai, the forecast high is 15°C. Typical daytime temperatures at this time of year range from 16°C to 21°C, so it will be cooler than usual. It is cooler than 87% of similar days.

Saturday 5 Sept

15°Ccooler than usual

usually 16°C–21°C

cooler than 87% of similar days

night: warmer than usual rain: exceptionally wet wind: exceptionally strong

Sunday 6 Sept

16°Ccooler than usual

usually 16°C–21°C

cooler than 81% of similar days

night: near normal rain: typical rainfall wind: stronger than usual

Monday 7 Sept

18°Cnear normal

usually 16°C–21°C

night: warmer than usual rain: typical rainfall wind: typical

Tuesday 8 Sept

18°Cnear normal

usually 16°C–21°C

night: exceptionally warm rain: typical rainfall wind: stronger than usual

Wednesday 9 Sept

18°Cnear normal

usually 15°C–21°C

night: exceptionally warm rain: more rain than usual wind: typical

Thursday 10 Sept

16°Cnear normal

usually 15°C–20°C

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Friday 11 Sept

17°Cnear normal

usually 15°C–20°C

night: exceptionally warm rain: typical rainfall wind: stronger than usual

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 18°C by day. The coolest year was 1996 (13°C) and the warmest was 2025 (24°C). The current forecast averages 17°C - lower than in 67% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

Weather warnings - Siauliai

Strong windyellow level

from 5 Sept, 05:36 to 6 Sept, 16:59

Areas: Šiauliu apskritis

Wind gusts can break branches and make driving harder. Watch for falling objects and stay away from trees.

Source: national weather service via Meteoalarm (EUMETNET). Yellow - be aware, orange - be prepared, red - take action.

14-day forecast - Siauliai

Siauliai - 14-day weather forecast infographic

Siauliai 30 & 45-day weather - long-range outlook

Next 16 days · forecast

16°

around 13° at night · days with rain: 8

Weeks 3-4 · avg for September

18°

around 9° at night · rain chance 45%

Weeks 5-7 · avg for October

10°

around 3° at night · rain chance 53%

The 30 & 45-day outlook for Siauliai: the next 16 days are a numerical forecast updated daily - on average 16° by day and 13° at night. Further out we rely on multi-year climate averages: around 18° in September, and about 10° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Siauliai

Saturday5 September 2026

🌧️15°moderate rain

sunrise 06:38 · sunset 20:12 · night 11° · evening 13° · rain 12.5 mm · humidity 85% · wind 9 m/s · clouds 77%

Sunday6 September 2026

🌧️16°light rain

sunrise 06:40 · sunset 20:09 · night 10° · evening 15° · rain 1.16 mm · humidity 61% · wind 6 m/s · clouds 31%

Monday7 September 2026

🌧️18°light rain

sunrise 06:42 · sunset 20:07 · night 11° · evening 15° · rain 1.26 mm · humidity 64% · wind 5 m/s · clouds 48%

Tuesday8 September 2026

☁️18°broken clouds

sunrise 06:44 · sunset 20:04 · night 15° · evening 19° · rain 0.27 mm · humidity 66% · wind 6 m/s · clouds 57%

Wednesday9 September 2026

🌧️18°light rain

sunrise 06:46 · sunset 20:01 · night 14° · evening 15° · rain 2.74 mm · humidity 77% · wind 4 m/s · clouds 100%

Thursday10 September 2026

🌧️16°light rain

sunrise 06:48 · sunset 19:59 · night 13° · evening 15° · rain 0.66 mm · humidity 72% · wind 8 m/s · clouds 100%

Friday11 September 2026

🌧️17°light rain

sunrise 06:50 · sunset 19:56 · night 14° · evening 16° · rain 0.15 mm · humidity 63% · wind 6 m/s · clouds 100%

Saturday12 September 2026

🌧️13°light rain

sunrise 06:52 · sunset 19:54 · night 11° · evening 15° · rain 4.26 mm · humidity 95% · wind 6 m/s · clouds 100%

Sunday13 September 2026

🌧️15°light rain

sunrise 06:53 · sunset 19:51 · night 12° · evening 12° · rain 5.34 mm · humidity 74% · wind 7 m/s · clouds 99%

Monday14 September 2026

🌧️14°light rain

sunrise 06:55 · sunset 19:48 · night 10° · evening 12° · rain 0.24 mm · humidity 67% · wind 7 m/s · clouds 11%

Tuesday15 September 2026

🌧️16°light rain

sunrise 06:57 · sunset 19:46 · night 12° · evening 14° · rain 0.33 mm · humidity 70% · wind 6 m/s · clouds 74%

Wednesday16 September 2026

☁️17°broken clouds

sunrise 06:59 · sunset 19:43 · night 14° · evening 19° · rain 1.05 mm · humidity 64% · wind 5 m/s · clouds 60%

Thursday17 September 2026

🌧️15°heavy rain

sunrise 07:01 · sunset 19:40 · night 14° · evening 17° · rain 19.77 mm · humidity 99% · wind 4 m/s · clouds 100%

Friday18 September 2026

🌧️19°light rain

sunrise 07:03 · sunset 19:38 · night 13° · evening 18° · rain 0.18 mm · humidity 73% · wind 5 m/s · clouds 30%

Saturday19 September 2026

☁️17°overcast clouds

sunrise 07:05 · sunset 19:35 · night 15° · evening 19° · rain 0.12 mm · humidity 78% · wind 3 m/s · clouds 88%

Sunday20 September 2026

☁️19°overcast clouds

sunrise 07:07 · sunset 19:32 · night 15° · evening 20° · humidity 71% · wind 3 m/s · clouds 96%

UV index in Siauliai - is it safe to sunbathe?

Today the UV index in Siauliai is 4 (moderate) - unprotected fair skin can burn in about 55 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

Pollen in Siauliai - info for allergy sufferers

Today ragweed pollen is highest in Siauliai - about 3 grains/m³, low level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.

Siauliai weather through the year

Warmest, driest months on average: April, May, June, July.

Upcoming public holidays in Lithuania: All Saints' Day — 1 November · All Souls' Day — 2 November · Christmas Eve — 24 December.

Nearby and related places

TelsiaiPanevezysJelgavaTaurageTukumsMarijampoleVilniusKlaipeda

FAQ - Siauliai weather

What is the weather like in Siauliai today?

Today it is about 15° during the day and 11° at night, moderate rain.

How far ahead can I check the forecast for Siauliai?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.