The Yellow warning for strengthening winds, issued for parts of 24 counties, was in force until 21:00 on Monday, September 21, 2026. This does not mean the cold-weather episode is over: the weather advisory for rain, wind and a sharp cool-down remains in force nationwide until 10:00 on Wednesday, September 24.
The distinction matters in practical terms. The Yellow warning concerned stronger gusts in defined areas over a short period. The advisory that remains in force describes the change in weather pattern affecting most of the country: lower temperatures, periods of rain and wind, and a risk of frost in some depressions over the coming nights.
Data published by the National Meteorological Administration show that the cool-down is spreading from north to south. For local updates, readers can also follow the Romania Weather page.
What remains in effect until Wednesday, September 24, at 10:00
The NMA advisory covers the period from 10:00 on Sunday, September 21, to 10:00 on Wednesday, September 24. During this period, temporary strengthening winds, rain in several phases and a significant cool-down are expected.
Temperatures are expected to fall by an average of 8 to 12 degrees. Meteorologists estimate highs generally between 14 and 21 degrees Celsius, values considered cold for this time of year. The cool-down was first felt in the northern half of the country and will extend south on Tuesday, September 22, and Wednesday, September 23.
Useful timeline of weather conditions
| Period | What the NMA announced | What matters in practice |
|---|---|---|
| Until 21:00 on Monday, September 21 | Yellow wind warning in parts of 24 counties, with gusts of 50–70 km/h; 80–90 km/h above 1,700 metres. | The area-specific warning has ended. It should not be confused with the nationwide advisory that remains in force. |
| Monday night–Tuesday, September 22 | Wind in most regions, then especially in Oltenia, and locally in Banat, Muntenia and the mountains. Showers spreading. | Travel plans and outdoor activities should be checked according to area and time. |
| Tuesday night–Wednesday, September 23 | Lows of 2–11 degrees Celsius; lower values in depressions, with conditions for frost. | A sensitive period for unprotected remaining crops and for people setting out early in the morning. |
| Wednesday night–Thursday, September 24 | Low temperatures and frost in depressions may remain possible before the advisory expires at 10:00. | In the mountains and in local low-lying areas, conditions can differ greatly from those in large cities. |
Rain, isolated hail and winter precipitation in the mountains
The NMA forecast periods of showers, temporarily accompanied by thunderstorms. On Monday, rain mainly affected the north, centre, east and south-east, before its coverage expands to other regions. Locally, rainfall totals may reach 10–15 litres per square metre, and 20–30 litres per square metre in limited areas.
Hail is possible in isolated locations: on Monday evening, particularly in the south-east, and on Tuesday afternoon in the south. This is not a forecast of widespread hail, but a local risk associated with showers.
At elevations above 1,700 metres, ice pellets, sleet and snow may occur temporarily from Monday night into Tuesday. For mountain routes, this detail is more important than the temperature in foothill settlements: wind and precipitation can reduce thermal comfort and visibility much faster at altitude.
Why frost is possible even with daytime highs of 14–21 degrees
The forecast daytime highs do not automatically reflect temperatures towards morning. The NMA estimates lows of 2–11 degrees during the nights from Tuesday to Wednesday and from Wednesday to Thursday, with depressions potentially recording the lowest values.
Frost is not forecast as a certainty in every locality. The institution indicates conditions for frost in depressions, meaning that its occurrence depends on local cloud cover, wind and ground-level temperature. For gardens, greenhouses or sensitive crops, checking the local forecast before evening, rather than only the regional forecast, is useful.
What to check before travelling
- Long journey: the time period and counties along the route, as showers and gusts will not be uniform across the country.
- Mountains: the altitude of the route, not only the weather at the departure resort; mixed precipitation or snow is possible above 1,700 metres.
- Early morning: the local minimum temperature, especially in depressions and rural areas.
- Outdoor activities: nowcasting updates, which may be issued for rapidly developing phenomena and cover areas much smaller than the nationwide advisory.
The forecast does not indicate that all counties are simultaneously under a wind warning. Monday’s Yellow warning had a separate end time, expiring at 21:00; after that point, the general advisory for cooler weather, precipitation and temporary strengthening winds remains relevant until Wednesday morning.
Frequently asked questions
Is the September 21 Yellow wind warning still in force?
No. The Yellow warning mentioned by the NMA was in force until 21:00 on Monday, September 21, 2026. Separately, the advisory for cooler weather, rain and wind remains in force until 10:00 on Wednesday, September 24.
For more information about the NMA, see also Heatwave on September 5: 31 counties and Bucharest under a Yellow warning from 10:00 to 21:00, which provides complementary details on this topic.
Where is frost possible?
The NMA indicates conditions for frost in depressions on the nights from Tuesday to Wednesday and from Wednesday to Thursday. The phenomenon is not forecast as a certainty in every locality.
Will it snow in Romania?
Ice pellets, sleet and snow may occur temporarily in the mountains, especially at elevations above 1,700 metres. Snow is not forecast for low-lying areas.
