diff --git a/GroveWeatherPi.py b/GroveWeatherPi.py
index 4704a1a..fd6b520 100644
--- a/GroveWeatherPi.py
+++ b/GroveWeatherPi.py
@@ -1805,6 +1805,21 @@ def checkForButtons():
 
 while True:
 	
+	# Check for new day to do some daily maintanance.
+	# For now, just reset the daily rainfall count. More might come...
+        today = datetime.now().day
+        if 'yesterday' in locals():             # Not the first run
+                if today != yesterday:          # A new day has begun
+                        # Reset daily rain count
+                        print "Reset rain count"
+                        totalRain = 0
+                        yesterday = today
+        else:                                   # First run, define yesterday
+                print "First run, define yesterday/initialize variables..."
+                yesterday = today
+                totalRain = 0
+        # New day can start...
+
 	# process Interrupts from Lightning
 
 	if (as3935Interrupt == True):