The T20 side formerly known as Glamorgan saw their first game at Northamptonshire on Thursday night fall victim to the weather.
But Dragons skipper Allenby said: "When it comes to the weather affecting conditions for a game, it's the same for both teams.
"How you handle the conditions is part of winning the cricket matches.
"The weather has been frustrating so far this season, we've lost more than 1,000 overs already, but not many of those have been lost at our games in Cardiff.
"We're quite fortunate that the groundsmen here do a great job and the club has invested in the outfield and the drainage at the stadium.
"So, unlike other grounds, we can be back playing half an hour after the rain has stopped."
With more than 13,000 tickets issued, the game is set to be a record-breaker as possibly the biggest crowd for a domestic cricket game in Wales.
And, based on current forecasts, the weather is improving ahead of play tomorrow, with dry weather and sunny spells expected from 4pm.
"It's great that we're expecting a full house for the first home game," said Allenby.
"T20 games are flexible by nature and usually deliver a result, so, even if it's not a bright sunny day, there's likely to be some action and fans will see some big hits all the same.
"I'd encourage everyone with a ticket to make the trip down to the Swalec for our biggest game to date.
"I know there's plenty going on around the stadium before the game, but the players are looking forward to putting on a show."
Gates open from 3pm with live music to keep the crowds entertained with performances from Welsh bands The Blims, S&M, plus Stereophonics tribute band, Monophonics.
There will also be a cricket village, with a coaching workshop and street entertainers.
Article sourced from www.walesonline.co.uk/sports/sports-news-round-up/2012/06/16/dragons-out-to-kick-start-campaign-91466-31194394/#ixzz1xyOQcmHp