Detailed weather forecast for Novo Mesto, Slovenia: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Novo Mesto
today🌧️29°💧 0.1 mm
Sun🌤️27°💧 2 mm
Mon☀️28°💧 0.7 mm
Tue☀️29°💧 4.5 mm
Wed🌧️27°💧 4.5 mm
Thu🌧️16°💧 9.1 mm
Fri🌧️17°💧 0.1 mm
Sat☁️24°💧 8.8 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 Novo Mesto, 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.
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 25°C - higher than in 87% 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Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window.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 - Novo Mesto
No active weather warnings for Novo Mesto (region: Southeast). The national weather service is not forecasting dangerous conditions.
14-day forecast - Novo Mesto
Novo Mesto 30 & 45-day weather - long-range outlook
Next 16 days · forecast
24°
around 18° at night · days with rain: 7
Weeks 3-4 · avg for September
22°
around 11° at night · rain chance 45%
Weeks 5-7 · avg for October
16°
around 7° at night · rain chance 48%
The 30 & 45-day outlook for Novo Mesto: the next 16 days are a numerical forecast updated daily - on average 24° by day and 18° at night. Further out we rely on multi-year climate averages: around 22° in September, and about 16° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Novo Mesto
Saturday5 September 2026
🌧️29°light rain
sunrise 06:25 · sunset 19:31 · night 20° · evening 26° · rain 0.14 mm · humidity 38% · wind 5 m/s · clouds 30%
Sunday6 September 2026
🌤️27°scattered clouds
sunrise 06:26 · sunset 19:29 · night 18° · evening 28° · rain 2.01 mm · humidity 49% · wind 3 m/s · clouds 38%
Monday7 September 2026
☀️28°clear sky
sunrise 06:27 · sunset 19:27 · night 20° · evening 27° · rain 0.69 mm · humidity 39% · wind 1 m/s · clouds 1%
Tuesday8 September 2026
☀️29°clear sky
sunrise 06:28 · sunset 19:25 · night 21° · evening 31° · rain 4.47 mm · humidity 40% · wind 2 m/s · clouds 5%
Wednesday9 September 2026
🌧️27°moderate rain
sunrise 06:29 · sunset 19:23 · night 19° · evening 26° · rain 4.48 mm · humidity 40% · wind 1 m/s · clouds 65%
Thursday10 September 2026
🌧️16°light rain
sunrise 06:31 · sunset 19:21 · night 13° · evening 15° · rain 9.09 mm · humidity 97% · wind 2 m/s · clouds 100%
Friday11 September 2026
🌧️17°light rain
sunrise 06:32 · sunset 19:19 · night 16° · evening 23° · rain 0.12 mm · humidity 80% · wind 1 m/s · clouds 100%
Saturday12 September 2026
☁️24°broken clouds
sunrise 06:33 · sunset 19:17 · night 18° · evening 23° · rain 8.79 mm · humidity 58% · wind 1 m/s · clouds 57%
Sunday13 September 2026
🌧️18°light rain
sunrise 06:34 · sunset 19:15 · night 14° · evening 15° · rain 0.42 mm · humidity 73% · wind 2 m/s · clouds 86%
Monday14 September 2026
🌤️20°scattered clouds
sunrise 06:36 · sunset 19:14 · night 14° · evening 23° · rain 18.9 mm · humidity 60% · wind 3 m/s · clouds 38%
Tuesday15 September 2026
☀️23°clear sky
sunrise 06:37 · sunset 19:12 · night 18° · evening 26° · rain 0.12 mm · humidity 49% · wind 2 m/s · clouds 95%
Wednesday16 September 2026
☀️27°clear sky
sunrise 06:38 · sunset 19:10 · night 19° · evening 29° · rain 9.63 mm · humidity 54% · wind 3 m/s · clouds 1%
Thursday17 September 2026
🌧️24°light rain
sunrise 06:39 · sunset 19:08 · night 18° · evening 27° · rain 0.51 mm · humidity 64% · wind 2 m/s · clouds 68%
Today the UV index in Novo Mesto is 6 (moderate) - unprotected fair skin can burn in about 35 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Pollen in Novo Mesto - info for allergy sufferers
Today ragweed pollen is highest in Novo Mesto - about 136 grains/m³, very 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.
Novo Mesto weather through the year
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.