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Weather in Celje - 14-day forecast

Detailed weather forecast for Celje, Slovenia: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Celje
today🌧️ 28°💧 2 mm
Sun🌧️ 26°💧 0.1 mm
Mon☀️ 27°💧 0.5 mm
Tue☀️ 29°💧 5.8 mm
Wed🌧️ 27°💧 4.9 mm
Thu🌧️ 15°💧 18.5 mm
Fri🌧️ 17°💧 0.3 mm
Sat🌤️ 23°💧 8.2 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

Tuesday 8 Sept in Celje, the forecast high is 29°C. Typical daytime temperatures at this time of year range from 19°C to 25°C, so it will be exceptionally warm. It is warmer than 97% of similar days.

28°Cexceptionally warm
usually 19°C–26°C
warmer than 95% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally strong
26°Cwarmer than usual
usually 19°C–26°C
warmer than 87% of similar days
night: exceptionally warm rain: typical rainfall wind: lighter than usual
27°Cexceptionally warm
usually 19°C–25°C
warmer than 91% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally light
29°Cexceptionally warm
usually 19°C–25°C
warmer than 97% of similar days
night: exceptionally warm rain: more rain than usual wind: exceptionally light
27°Cexceptionally warm
usually 18°C–25°C
warmer than 92% of similar days
night: exceptionally warm rain: more rain than usual wind: exceptionally light
15°Cexceptionally cool
usually 18°C–25°C
cooler than 95% of similar days
night: warmer than usual rain: exceptionally wet wind: exceptionally light
17°Ccooler than usual
usually 18°C–25°C
cooler than 88% of similar days
night: exceptionally warm rain: typical rainfall wind: exceptionally light

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 →
15°23°30° 1981: 20°C1982: 23°C1983: 23°C1984: 21°C1985: 20°C1986: 19°C1987: 23°C1988: 23°C1989: 19°C1990: 21°C1991: 23°C1992: 22°C1993: 20°C1994: 24°C1995: 21°C1996: 17°C1997: 25°C1998: 22°C1999: 22°C2000: 21°C2001: 18°C2002: 22°C2003: 22°C2004: 22°C2005: 23°C2006: 23°C2007: 18°C2008: 26°C2009: 20°C2010: 19°C2011: 26°C2012: 26°C2013: 24°C2014: 20°C2015: 19°C2016: 24°C2017: 21°C2018: 25°C2019: 20°C2020: 25°C2021: 24°C2022: 26°C2023: 24°C2024: 25°C2025: 23°C 2026 forecast: 24°C current forecast 24°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 22°C by day. The coolest year was 1996 (17°C) and the warmest was 2011 (26°C). The current forecast averages 24°C - higher than in 80% 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 - Celje

No active weather warnings for Celje (region: Northeast). The national weather service is not forecasting dangerous conditions.

14-day forecast - Celje

Celje - 14-day weather forecast infographic

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

Next 16 days · forecast
23°
around 18° at night · days with rain: 7
Weeks 3-4 · avg for September
21°
around 10° at night · rain chance 40%
Weeks 5-7 · avg for October
16°
around 7° at night · rain chance 35%
The 30 & 45-day outlook for Celje: the next 16 days are a numerical forecast updated daily - on average 23° by day and 18° at night. Further out we rely on multi-year climate averages: around 21° in September, and about 16° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Celje

Saturday5 September 2026
🌧️28°light rain
sunrise 06:24 · sunset 19:31 · night 20° · evening 25° · rain 1.99 mm · humidity 52% · wind 5 m/s · clouds 73%
Sunday6 September 2026
🌧️26°light rain
sunrise 06:25 · sunset 19:29 · night 17° · evening 28° · rain 0.12 mm · humidity 48% · wind 2 m/s · clouds 29%
Monday7 September 2026
☀️27°clear sky
sunrise 06:26 · sunset 19:27 · night 20° · evening 27° · rain 0.48 mm · humidity 42% · wind 1 m/s · clouds 1%
Tuesday8 September 2026
☀️29°clear sky
sunrise 06:27 · sunset 19:25 · night 20° · evening 31° · rain 5.76 mm · humidity 45% · wind 2 m/s · clouds 8%
Wednesday9 September 2026
🌧️27°light rain
sunrise 06:29 · sunset 19:23 · night 19° · evening 28° · rain 4.93 mm · humidity 43% · wind 2 m/s · clouds 29%
Thursday10 September 2026
🌧️15°moderate rain
sunrise 06:30 · sunset 19:21 · night 14° · evening 14° · rain 18.54 mm · humidity 97% · wind 2 m/s · clouds 100%
Friday11 September 2026
🌧️17°light rain
sunrise 06:31 · sunset 19:19 · night 16° · evening 23° · rain 0.27 mm · humidity 83% · wind 1 m/s · clouds 100%
Saturday12 September 2026
🌤️23°scattered clouds
sunrise 06:33 · sunset 19:17 · night 17° · evening 25° · rain 8.22 mm · humidity 56% · wind 1 m/s · clouds 47%
Sunday13 September 2026
🌧️17°light rain
sunrise 06:34 · sunset 19:15 · night 12° · evening 15° · rain 0.51 mm · humidity 77% · wind 2 m/s · clouds 100%
Monday14 September 2026
🌤️19°a few clouds
sunrise 06:35 · sunset 19:13 · night 13° · evening 21° · rain 41.1 mm · humidity 65% · wind 2 m/s · clouds 19%
Tuesday15 September 2026
☀️22°clear sky
sunrise 06:36 · sunset 19:11 · night 17° · evening 26° · rain 0.69 mm · humidity 54% · wind 2 m/s · clouds 77%
Wednesday16 September 2026
☀️25°clear sky
sunrise 06:38 · sunset 19:09 · night 18° · evening 27° · rain 15.12 mm · humidity 57% · wind 4 m/s · clouds 18%
Thursday17 September 2026
🌧️19°light rain
sunrise 06:39 · sunset 19:07 · night 18° · evening 25° · rain 0.3 mm · humidity 84% · wind 1 m/s · clouds 100%
Friday18 September 2026
🌤️25°scattered clouds
sunrise 06:40 · sunset 19:05 · night 19° · evening 28° · humidity 55% · wind 2 m/s · clouds 29%
Saturday19 September 2026
☀️26°clear sky
sunrise 06:41 · sunset 19:04 · night 20° · evening 29° · humidity 49% · wind 2 m/s · clouds 2%
Sunday20 September 2026
☀️27°clear sky
sunrise 06:43 · sunset 19:02 · night 22° · evening 31° · humidity 47% · wind 1 m/s

UV index in Celje - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTCelje03681111+4.4UV MODERATEtoday, daily maxSeek shade around midday. SPF 30+, sunglasses and ahat for longer stays.Unprotected fair skin may burn in about 45 min4Sat5.096Sun6.096Mon7.096Tue8.096Wed9.093Thu10.094Fri11.095Sat12.094Sun13.094Mon14.095Tue15.095Wed16.094Thu17.091Fri18.094Sat19.094Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Celje is 4 (moderate) - unprotected fair skin can burn in about 45 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

Pollen in Celje - info for allergy sufferers

PLANT POLLEN · 4-DAY FORECASTCeljeHighest pollen today: Ragweed39 grains/m³ · high leveltoday5.09tomorrow6.09Mon7.09Tue8.09Grasses1222Mugwort2466Ragweed3932374nonelowmoderatehighvery highoff season: alder, birch, olive · values in grains/m³ (daily peak)pogodapodroze.pl · 2026-09-05
Today ragweed pollen is highest in Celje - about 39 grains/m³, high level. Allergy sufferers should limit time outdoors on dry, windy days and take medication as advised. Pollen levels are a CAMS model forecast and are indicative.

Celje weather through the year

Celje - annual climate

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

Upcoming public holidays in Slovenia: Reformation Day — 31 October · Day of the Dead — 1 November · Christmas Day — 25 December.

Nearby and related places

VelenjeŠmartno pri LitijiMariborNovo MestoPtujSamoborLjubljanaKoperKranj

FAQ - Celje weather

What is the weather like in Celje today?
Today it is about 28° during the day and 20° at night, light rain.
How far ahead can I check the forecast for Celje?
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.