We are surrounded! As expected last week, the jet stream has gotten itself all bunched up with blocking ridges to the east and west of us. Instead of progressing eastward, those big waves are temporarily stuck in a pattern that promises cool weather into early next week. That's quite a change coming off of our second warmest April on record.

Today and tomorrow look to be the coldest of this cool period, with highs only in the upper 50s and lows in the mid 40s. Patchy frost is possible north and west of the mid-Hudson Valley tonight. The expected daily highs are about ten degrees cooler than normal for this time of year. A weak shortwave disturbance passing overhead right now will bring clouds and possibly a few light showers through early this afternoon.

Other than the long stretch of cool weather, there isn't much going on in the local forecast. Afternoon highs will gradually warm to the lower 60s by the middle of the week as a weak high pressure system builds in underneath the upper level trough. There is not yet much confidence in the forecast toward the weekend, but the models may be pointing to rain on Saturday.