Colorado May Weather

4:20 pm: It has just begun to rain and it's about 46 degrees.   The forecast the next few days/nights is for rainy days in the mid-to-high 50's (not so bad), but 40-ish each night (not so good).  The past few days have been off-and-on cold with cold nights.  We've had some nice rain, so things are greening up.  It's just frustrating not knowing when to plant or what's ok to plant.I guess I'm getting more exposure to Colorado unpredictable weather.  I know that May 15 is ...