Thunderstorms and week-long spell of rain forecast for Canberra

The Bush Capital is due to receive a week-long shower session complete with thunderstorms after an extended period of dry weather conditions.

There's a 90 per cent chance of showers and thunderstorms on Wednesday afternoon.

Rainfall for October was well below average. Total rainfall for Canberra during October was 32.6 mm, which is 58 per cent of the long-term October average of 55.9mm.

A trough moving in from Western NSW will make its way into the ACT on Tuesday evening, bringing with it rain and thunderstorms, a Bureau of Meteorology spokesperson said.

Temperatures will remain warm but showers will persist during the afternoon with light winds.

Pack an umbrella to work on Wednesday and Thursday because there is a very high chance of showers and thunderstorms on both days.

A trough moving into Canberra from western NSW is expected to bring showers and thunderstorms. Picture by Gary Ramage

Bureau meteorologist Jiwon Park said the thunderstorms wouldn't be severe and the inland trough heading into Canberra from western NSW would lose most of its strength before it reached Canberra.

Temperatures are expected to rise on the weekend with 33 degrees forecast for Saturday.

"Storms will most probably be active mid-week, because of the deepening inland trough," Mr Park said.

"There will be some severe thunderstorms in western NSW but these storms are likely to be confined to the west of the Brindabellas.

"Showers and storms will continue in the later part of the week and we will also see an increase in temperatures towards the end of the week especially on Saturday," he said.

Mr Park said showers will clear by the end of this week.

Bureau of Meteorology's Canberra forecast

• Wednesday: Min 9, Max 25 - Very high chance of showers, most likely this afternoon. The chance of a thunderstorm.
• Thursday: Min 11, Max 23 - Partly cloudy. Very high chance of showers, most likely in the morning and afternoon.
• Friday: Min 10, Max 29 - Partly cloudy. Slight chance of a shower.
• Saturday: Min 12, Max 33 - Mostly sunny. Slight chance of a shower.
• Sunday: Min 13, Max 30 - Partly cloudy. Slight chance of a shower.
• Monday: Min 9, Max 27 - Partly cloudy.