After dry weather and a severe heat wave over the next four days over Punjab and Haryana, the temperatures are expected to come down with the weather office forecasting a two-day wet spell over some parts of these states.The weather is likely to be dry from May 24-27 and light rainfall is likely at isolated places on May 28 and 29, according to a bulletin issued by the India Meteorological Department (IMD) on May 23. A fresh western disturbance is likely to affect north-west India from May 28.No large change in maximum temperatures is expected during the next 24 hours. A rise by 2-4 degree Celsius for the subsequent four days and a fall thereafter is expected. Thunderstorms, lightning and gusty winds are also possible at isolated places on May 28 and 29.Over the past 24 hours, light rain along with thunderstorms and lightning occurred at isolated places in Punjab, while Haryana remained dry. Gusty winds were experienced at some places in both states. Faridkot, Hoshiarpur, Pathankot, Ropar and Nawanshahar districts in Punjab received a small amount of rain.During this period, the day temperatures were above normal in Haryana but normal in Punjab where IMD reported an appreciable fall from the previous day, whereas night temperatures were normal in Haryana but above normal in Punjab.According to IMD, a western disturbance as a cyclonic circulation prevails over Jammu and its neighbourhood in lower tropospheric levels, and a trough runs from Punjab to south-west Rajasthan in lower tropospheric levels.Under the influence of these systems, scattered to fairly widespread light to moderate rainfall with thunderstorms, lightning and gusty winds are likely over Jammu and Kashmir and Uttarakhand till May 25 and over Himachal Pradesh on May 29. Isolated hailstorm activity is also expected over Himachal Pradesh on May 29.