diff --git a/src/main/java/no/nibio/vips/model/deliaradicummodel/DeliaRadicumModel.java b/src/main/java/no/nibio/vips/model/deliaradicummodel/DeliaRadicumModel.java
index d6f358905f67136b75a8d272879f9ee9ef05d346..2a750624bd611bbbabad173b865de3c2c42ce370 100644
--- a/src/main/java/no/nibio/vips/model/deliaradicummodel/DeliaRadicumModel.java
+++ b/src/main/java/no/nibio/vips/model/deliaradicummodel/DeliaRadicumModel.java
@@ -366,7 +366,7 @@ public class DeliaRadicumModel extends I18nImpl implements Model{
         Calendar cal = Calendar.getInstance(this.timeZone);
         
         Double sum = 0.0;
-        while(today.compareTo(lastDate) < 0)
+        while(today.compareTo(lastDate) <= 0)
         {
             WeatherObservation todayTemp = (WeatherObservation)this.dataMatrix.getParamValueForDate(today, inputParameterName);
             if(todayTemp == null)