Like London weather, perhaps

• Wet outside
• Wet, weatherwise
• Like April, proverbially
• Oddly sorry about 11, as wet
• Raining off and on

Wiktionary Word definitions in Wiktionary
a. 1 Given to showers; having frequent rainfall. 2 Of or relating to a shower or showers.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Showery \Show"er*y\, a. Raining in showers; abounding with frequent showers of rain. Of or pertaining to a shower or showers. ``Colors of the showery arch.'' --Milton.

WordNet Word definitions in WordNet
adj. (of weather) wet by periods of rain; "showery weather"; "rainy days" [syn: rainy ]

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
adjective EXAMPLES FROM CORPUS ▪ A showery day, as I recall. ▪ At mid-morning the traffic was heavy, slowed down by the showery outbreak. ▪ East Anglia: Bright, mainly dry, becoming showery . ▪ Frontal zones gave periods of rain followed by brighter, more ...