diff --git a/CHANGELOG.md b/CHANGELOG.md
index e0504dcf8..b964995c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 ### Added:
 - Count duration for entries spanning multiple days for each individual day
+- Weekly aggregation in story time charts
 
 ## [0.8.112] - 2022-07-19
 ### Changed:
diff --git a/lib/logic/charts/story_data.dart b/lib/logic/charts/story_data.dart
index f3785a509..1fd71fe49 100644
--- a/lib/logic/charts/story_data.dart
+++ b/lib/logic/charts/story_data.dart
@@ -1,10 +1,12 @@
 import 'dart:core';
 import 'dart:math';
 
+import 'package:equatable/equatable.dart';
 import 'package:flutter/material.dart';
 import 'package:jiffy/jiffy.dart';
 import 'package:lotti/classes/journal_entities.dart';
 import 'package:lotti/widgets/charts/utils.dart';
+import 'package:week_of_year/week_of_year.dart';
 
 enum AggregationTimeframe {
   daily,
@@ -112,24 +114,63 @@ List<MeasuredObservation> aggregateStoryDailyTimeSum(
   return aggregated;
 }
 
+class WeeklyAggregate extends Equatable {
+  const WeeklyAggregate(this.isoWeek, this.value);
+
+  final String isoWeek;
+  final num value;
+
+  @override
+  String toString() {
+    return '$isoWeek $value';
+  }
+
+  @override
+  List<Object?> get props => [isoWeek, value];
+}
+
+List<WeeklyAggregate> aggregateStoryWeeklyTimeSum(
+  List<JournalEntity?> entities, {
+  required DateTime rangeStart,
+  required DateTime rangeEnd,
+}) {
+  final minutesByWeek = <String, num>{};
+
+  aggregateStoryDailyTimeSum(
+    entities,
+    rangeStart: rangeStart,
+    rangeEnd: rangeEnd,
+  ).forEach((byDay) {
+    final year = byDay.dateTime.year;
+    final weekOfYear = byDay.dateTime.weekOfYear;
+    final isoWeek = '$year-W${padLeft(weekOfYear)}';
+    final prev = minutesByWeek[isoWeek] ?? 0;
+    minutesByWeek[isoWeek] = prev + byDay.value;
+  });
+
+  final aggregated = <WeeklyAggregate>[];
+  minutesByWeek.forEach((isoWeek, value) {
+    aggregated.add(WeeklyAggregate(isoWeek, value));
+  });
+
+  return aggregated;
+}
+
 List<MeasuredObservation> aggregateStoryTimeSum(
   List<JournalEntity?> entities, {
   required DateTime rangeStart,
   required DateTime rangeEnd,
   required AggregationTimeframe timeframe,
 }) {
-  switch (timeframe) {
-    case AggregationTimeframe.daily:
-      return aggregateStoryDailyTimeSum(
-        entities,
-        rangeStart: rangeStart,
-        rangeEnd: rangeEnd,
-      );
-    case AggregationTimeframe.weekly:
-      return aggregateStoryDailyTimeSum(
-        entities,
-        rangeStart: rangeStart,
-        rangeEnd: rangeEnd,
-      );
-  }
+  aggregateStoryWeeklyTimeSum(
+    entities,
+    rangeStart: rangeStart,
+    rangeEnd: rangeEnd,
+  );
+
+  return aggregateStoryDailyTimeSum(
+    entities,
+    rangeStart: rangeStart,
+    rangeEnd: rangeEnd,
+  );
 }
diff --git a/pubspec.lock b/pubspec.lock
index fb76f1886..528197730 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -2202,6 +2202,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "7.3.2"
+  week_of_year:
+    dependency: "direct main"
+    description:
+      name: week_of_year
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
   win32:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index d86644146..32b4b3fd1 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: lotti
 description: A Smart Journal.
 publish_to: 'none'
-version: 0.8.113+1168
+version: 0.8.113+1169
 
 msix_config:
   display_name: Lotti
@@ -143,6 +143,7 @@ dependencies:
   url_launcher: ^6.1.2
   uuid: ^3.0.4
   wechat_assets_picker: ^7.0.1
+  week_of_year: ^2.0.0
   window_manager: ^0.2.0
   yaml: ^3.1.0
 
diff --git a/test/journal_test_data/test_data.dart b/test/journal_test_data/test_data.dart
index 2db4dfff9..9eeac6d14 100644
--- a/test/journal_test_data/test_data.dart
+++ b/test/journal_test_data/test_data.dart
@@ -375,3 +375,13 @@ final testDurationEntry5 = JournalEntry(
     dateTo: DateTime(2022, 7, 5, 1),
   ),
 );
+
+final testDurationEntry6 = JournalEntry(
+  meta: Metadata(
+    id: 'id',
+    createdAt: DateTime.now(),
+    updatedAt: DateTime.now(),
+    dateFrom: DateTime(2022, 6, 1, 22),
+    dateTo: DateTime(2022, 6, 12, 1),
+  ),
+);
diff --git a/test/logic/charts/story_data_test.dart b/test/logic/charts/story_data_test.dart
index fae1a3319..8df34e024 100644
--- a/test/logic/charts/story_data_test.dart
+++ b/test/logic/charts/story_data_test.dart
@@ -205,5 +205,51 @@ void main() {
         );
       },
     );
+
+    test(
+      'weekly aggregates handle entries stretching multiple days',
+      () {
+        expect(
+          aggregateStoryWeeklyTimeSum(
+            [
+              testDurationEntry4,
+              testDurationEntry5,
+              testDurationEntry6,
+            ],
+            rangeStart: DateTime(2022, 6, 1),
+            rangeEnd: DateTime(2022, 7, 15),
+          ),
+          const [
+            WeeklyAggregate('2022-W22', 5880.0),
+            WeeklyAggregate('2022-W23', 8700.0),
+            WeeklyAggregate('2022-W24', 0),
+            WeeklyAggregate('2022-W25', 0),
+            WeeklyAggregate('2022-W26', 1740.0),
+            WeeklyAggregate('2022-W27', 1500.0),
+            WeeklyAggregate('2022-W28', 0)
+          ],
+        );
+      },
+    );
+
+    test(
+      'weekly aggregates handle entries stretching multiple days',
+      () {
+        expect(
+          aggregateStoryWeeklyTimeSum(
+            [],
+            rangeStart: DateTime(2022, 6, 1),
+            rangeEnd: DateTime(2022, 6, 30),
+          ),
+          const [
+            WeeklyAggregate('2022-W22', 0),
+            WeeklyAggregate('2022-W23', 0),
+            WeeklyAggregate('2022-W24', 0),
+            WeeklyAggregate('2022-W25', 0),
+            WeeklyAggregate('2022-W26', 0),
+          ],
+        );
+      },
+    );
   });
 }