Expect a stretch of mild fall weather this week as forecast calls for several days of above-average temperatures for late September before a cooler air mass arrives to end the work week. According to Environment Canada, increasing cloudiness is expected Monday morning, while areas of fog will dissipate as the day progresses. Winds are forecast to shift to the north near noon at 20 km/h, with a daytime high of 22 C. The UV index is expected to reach five, considered moderate. Partly cloudy conditions are forecast Monday night, with fog patches developing overnight and a low of 9 C. Tuesday is expected to bring a mix of sun and cloud after morning fog patches clear. The high will climb to 23 C, while the UV index is forecast at six, or high. Cloudy periods are expected overnight Tuesday, with a low of 13 C. Cloud cover is forecast to continue Wednesday, with a daytime high of 22 C. Wednesday night will remain cloudy, with a 30 per cent chance of showers and a low of 14 C. The chance of rain increases slightly Thursday, as Environment Canada is calling for cloudy skies and a 40 per cent chance of showers. The daytime high is expected to reach 23 C. Similar conditions are forecast Thursday night, with a low of 13 C. Temperatures are expected to cool somewhat heading into Friday, when a mix of sun and cloud is forecast along with a high of 17 C.