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Amidst the great festival of folk faith, Chhath Puja (Chhath Puja 2026), the weather of Bihar has started changing rapidly. The effect of pink cold and shivering is now clearly being felt in most of the districts of the state including the capital Patna in the morning and night. According to the latest bulletin issued by the Meteorological Center, Patna (IMD Patna), light to moderate fog and mist prevailed in many parts of the state on Saturday morning (14 November 2026), due to which a slight reduction in visibility was recorded in the morning. Meteorologists say that due to the active westerly winds and the effect of the new Western Disturbance forming in North-West India, the minimum temperature of the state will drop further in the next three to four days, due to which the severity of cold will increase rapidly.
According to the forecast of Patna Meteorological Centre, there is a strong possibility of light to moderate fog in the morning in almost all the districts of Bihar during the next 48 hours. However, as the day progresses, the sky will clear completely and there will be good sunshine in the afternoon. The most reassuring thing is that during the main days of Mahaparva Chhath—i.e. today Kharna (14 November), tomorrow Sandhya Arghya (15 November) and day after tomorrow Usha Arghya (16 November)—the weather will remain completely dry in entire Bihar. The Meteorological Department has clarified that there is no warning of rain or storm in any district of the state for the next seven days (till November 19, 2026), due to which the fasts and devotees at Chhath Ghats will not have to face any weather obstruction.
According to the district wise temperature forecast table of the Meteorological Department, at present the night temperatures in the districts of south-west Bihar (like Rohtas, Kaimur, Aurangabad and Arwal) are hovering around 16 to 18 degrees Celsius, while the minimum temperatures in other parts of the state are being recorded between 18 to 20 degrees Celsius.
| Weather Division of Bihar | major districts | Maximum temperature (day) | Minimum temperature (night/morning) | weather conditions |
| North-West Bihar | West and East Champaran, Gopalganj, Siwan, Saran | 28°C to 30°C | 18°C to 20°C | Light to moderate fog in the morning, clear weather during the day. |
| North-Central Bihar | Muzaffarpur, Darbhanga, Madhubani, Samastipur, Vaishali | 28°C to 30°C | 18°C to 20°C | morning mist and fog, dry weather |
| North-East Bihar | Purnia, Katihar, Kishanganj, Araria, Saharsa | 30°C to 32°C | 18°C to 20°C | Moderate fog in lowland areas, sunny during the day |
| south-west bihar | Buxar, Bhojpur, Rohtas, Bhabhua, Aurangabad, Arwal | 30°C to 32°C | 16°C to 18°C | Coldest nights in the state, slight shiver in the morning |
| South-Central Bihar | Patna, Gayaji, Nalanda, Nawada, Jehanabad, Lakhisarai | 28°C to 30°C | 18°C to 20°C | Mist and fog in the morning, slight warmth in the afternoon |
| south-east bihar | Bhagalpur, Munger, Banka, Jamui, Khagaria | 28°C to 30°C | 18°C to 20°C | Weather is dry, light fog in the morning |
Since there will be light mist and cold winds between 05:00 am to 06:30 am on the ghats of rivers and ponds at the time of Usha Arghya on the morning of 16th November, Chhath vratis, children and elderly people have been advised to carry adequate warm clothes. Additionally, the air quality index (AQI) remains in the poor category (around 250 to 280) in many cities, including the capital Patna, so people walking amidst fog and smog in the morning and respiratory patients need to use masks and remain alert. Drivers have also been advised to drive slowly due to fog on rural and highway routes in the morning.