diff --git a/bin/weewx/xtypes.py b/bin/weewx/xtypes.py
index b8997d33..6365c4a8 100644
--- a/bin/weewx/xtypes.py
+++ b/bin/weewx/xtypes.py
@@ -1084,12 +1084,8 @@ class WindVecDaily(XType):
         if aggregate_type not in ['avg', 'not_null']:
             raise weewx.UnknownAggregation(aggregate_type)
 
-        # We cannot use the day summaries if the starting and ending times of the aggregation
-        # interval are not on midnight boundaries, and are not the first or last records in the
-        # database.
-        if not (isStartOfDay(timespan.start) or timespan.start == db_manager.first_timestamp) \
-                or not (isStartOfDay(timespan.stop) or timespan.stop == db_manager.last_timestamp):
-            raise weewx.UnknownAggregation(aggregate_type)
+        # Check to see whether we can use the daily summaries:
+        DailySummaries._check_eligibility('wind', timespan, db_manager, aggregate_type)
 
         if aggregate_type == 'not_null':
             # Aggregate type 'not_null' is actually run against 'wind'.
diff --git a/docs/changes.txt b/docs/changes.txt
index a102b72d..7a179fdc 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -8,6 +8,8 @@ Image.ANTIALIAS were deprecated in Pillow 9.2 (1-Jul-2022), then removed in
 Pillow 10.0 (1-Jul-2023). Replaces them with alternatives. Fixes issue
 #884.
 
+Fixed problem when plotting wind vectors using database without daily summaries.
+
 
 4.10.2 02/22/2023