diff --git a/class_weather.php b/class_weather.php
index 5d716ce..97a0e91 100644
--- a/class_weather.php
+++ b/class_weather.php
@@ -17,10 +17,19 @@ class Weather {
                      . "&appid=" . WEATHERAPIKEY
                      . "&units=" . WEATHERUNITS;
 
-    public static function fetchWeather() {
+    public static function deleteOldWeather($days = 10) {
+        if ( !is_int($days) ) return false;
+        if ( $days < 0 ) return false;
+        $query = "DELETE FROM " . AppDB::TABLE_WEATHER . " WHERE DATEDIFF(NOW(), sampledate) > :days";
+        $sth = AppDB::getSTH($query);
+        if ( $sth === false ) return false;
+        $sth->bindValue(":days", $days, PDO::PARAM_INT);
+        $sth->execute();
+    }
 
+    public static function fetchWeather() {
         $weather = file_get_contents(Weather::WEATHERURL);
-        $query = "UPDATE " . AppDB::TABLE_WEATHER . " SET weather=:weather";
+        $query = "INSERT INTO " . AppDB::TABLE_WEATHER . " (sampledate, weather) VALUES(NOW(), :weather)";
         $sth = AppDB::getSTH($query);
         if ( $sth === false ) return false;
         $sth->bindValue(":weather", $weather, PDO::PARAM_STR);
@@ -28,7 +37,7 @@ class Weather {
     }
 
     public static function getWeather() {
-        $query = "SELECT weather FROM " . AppDB::TABLE_WEATHER . " LIMIT 1";
+        $query = "SELECT weather FROM " . AppDB::TABLE_WEATHER . " ORDER BY sampledate DESC LIMIT 1";
         $sth = AppDB::getSTH($query);
         if ( $sth === false ) return false;
         $sth->execute();
diff --git a/install/hometasks.sql b/install/hometasks.sql
index 085b9be..8414192 100644
--- a/install/hometasks.sql
+++ b/install/hometasks.sql
@@ -42,7 +42,9 @@ DROP TABLE IF EXISTS `weather`;
 /*!40101 SET @saved_cs_client     = @@character_set_client */;
 /*!40101 SET character_set_client = utf8 */;
 CREATE TABLE `weather` (
-  `weather` text NOT NULL
+  `sampledate` datetime NOT NULL,
+  `weather` text NOT NULL,
+  PRIMARY KEY(`sampledate`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC;
 /*!40101 SET character_set_client = @saved_cs_client */;
 /*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
diff --git a/weather.php b/weather.php
index 30d8492..3944131 100644
--- a/weather.php
+++ b/weather.php
@@ -10,5 +10,6 @@ require_once("authfunctions.php");
 if ( php_sapi_name() != "cli" ) exit();
 
 $fetched = Weather::fetchWeather();
+$deleted = Weather::deleteOldWeather();
 
 exit();