worldweather34°Cexceptionally warm
usually 22°C–30°C
warmer than 96% of similar days
night: exceptionally warm
rain: more rain than usual
wind: typical
Weather in Nis - 14-day forecast
Detailed weather forecast for Nis, Serbia: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Nis
today☀️
34°💧 1.3 mm
Sun☀️
30°💧 0.3 mm
Mon☀️
30°💧 2.4 mm
Tue🌤️
30°💧 2.1 mm
Wed☀️
31°💧 0.2 mm
Thu☀️
29°💧 0.2 mm
Fri☀️
28°💧 2.6 mm
Sat🌤️
30°💧 4.2 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Saturday 5 Sept in Nis, the forecast high is 34°C. Typical daytime temperatures at this time of year range from 22°C to 30°C, so it will be exceptionally warm. It is warmer than 96% of similar days.
30°Cwarmer than usual
usually 22°C–29°C
warmer than 81% of similar days
night: exceptionally warm
rain: typical rainfall
wind: stronger than usual
30°Cwarmer than usual
usually 21°C–29°C
warmer than 85% of similar days
night: exceptionally warm
rain: more rain than usual
wind: typical
30°Cwarmer than usual
usually 21°C–29°C
warmer than 88% of similar days
night: exceptionally warm
rain: more rain than usual
wind: typical
31°Cexceptionally warm
usually 21°C–29°C
warmer than 91% of similar days
night: exceptionally warm
rain: typical rainfall
wind: lighter than usual
29°Cwarmer than usual
usually 21°C–29°C
warmer than 85% of similar days
night: exceptionally warm
rain: typical rainfall
wind: stronger than usual
28°Cwarmer than usual
usually 21°C–28°C
warmer than 77% of similar days
night: exceptionally warm
rain: more rain than usual
wind: lighter 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.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 25°C by day. The coolest year was 1996 (16°C) and the warmest was 2008 (32°C). The current forecast averages 30°C - higher than in 98% 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Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window.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 - Nis
Heatorange level
from 5 Sept, 00:00 to 7 Sept, 23:59
Areas: Jugoistocna Srbija
High temperatures and risk of overheating. Drink plenty of water, avoid the midday sun and look after the elderly.
Source: national weather service via Meteoalarm (EUMETNET). Yellow - be aware, orange - be prepared, red - take action.
14-day forecast - Nis
Nis 30 & 45-day weather - long-range outlook
Next 16 days · forecast
29°
around 20° at night · days with rain: 7
Weeks 3-4 · avg for September
25°
around 12° at night · rain chance 45%
Weeks 5-7 · avg for October
19°
around 7° at night · rain chance 37%
The 30 & 45-day outlook for Nis: the next 16 days are a numerical forecast updated daily - on average 29° by day and 20° at night. Further out we rely on multi-year climate averages: around 25° in September, and about 19° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Nis
Saturday5 September 2026
☀️34°clear sky
Sunday6 September 2026
☀️30°clear sky
Monday7 September 2026
☀️30°clear sky
Tuesday8 September 2026
🌤️30°a few clouds
Wednesday9 September 2026
☀️31°clear sky
Thursday10 September 2026
☀️29°clear sky
Friday11 September 2026
☀️28°clear sky
Saturday12 September 2026
🌤️30°scattered clouds
Sunday13 September 2026
☀️30°clear sky
Monday14 September 2026
🌧️22°light rain
Tuesday15 September 2026
☀️26°clear sky
Wednesday16 September 2026
🌤️29°a few clouds
Thursday17 September 2026
☀️28°clear sky
Friday18 September 2026
☀️29°clear sky
Saturday19 September 2026
🌤️32°scattered clouds
Sunday20 September 2026
☀️30°clear sky
UV index in Nis - is it safe to sunbathe?
Today the UV index in Nis is 6 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.
Pollen in Nis - info for allergy sufferers
Today ragweed pollen is highest in Nis - about 68 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.
Nis weather through the year
Warmest, driest months on average: April, May, June, July.
Upcoming public holidays in Serbia: Armistice Day — 11 November · New Year's Day — 1 January · New Year's Day — 2 January.
Nearby and related places
FAQ - Nis weather
What is the weather like in Nis today?
Today it is about 34° during the day and 22° at night, clear sky.
How far ahead can I check the forecast for Nis?
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.