diff --git a/apps/openmw/mwlua/regionbindings.cpp b/apps/openmw/mwlua/regionbindings.cpp
index ebdce90b28..46ff0eb3c2 100644
--- a/apps/openmw/mwlua/regionbindings.cpp
+++ b/apps/openmw/mwlua/regionbindings.cpp
@@ -6,6 +6,8 @@
 #include <components/lua/luastate.hpp>
 #include <components/misc/color.hpp>
 
+#include "../mwworld/weather.hpp"
+
 namespace sol
 {
     template <>
@@ -47,14 +49,12 @@ namespace MWLua
             = sol::readonly_property([](const ESM::Region& rec) { return LuaUtil::serializeRefId(rec.mSleepList); });
 
         regionT["weatherProbabilities"] = sol::readonly_property([lua = lua.lua_state()](const ESM::Region& rec) {
-            constexpr std::array<const char*, 10> WeatherNames
-                = { "clear", "cloudy", "foggy", "overcast", "rain", "thunder", "ash", "blight", "snow", "blizzard" };
 
             sol::table res(lua, sol::create);
             for (size_t i = 0; i < rec.mData.mProbabilities.size(); ++i)
             {
-                res[LuaUtil::toLuaIndex(i)] = rec.mData.mProbabilities[i];
-                res[WeatherNames[i]] = rec.mData.mProbabilities[i];
+                const MWWorld::Weather* weather =  MWBase::Environment::get().getWorld()->getWeather(i);
+                res[weather->mId.serializeText()] = rec.mData.mProbabilities[i];
             }
             return res;
         });
diff --git a/files/lua_api/openmw/core.lua b/files/lua_api/openmw/core.lua
index 8a0285d3fc..c01f92eebe 100644
--- a/files/lua_api/openmw/core.lua
+++ b/files/lua_api/openmw/core.lua
@@ -1176,11 +1176,11 @@
 -- @field #string sleepList A leveled creature list used when sleeping outdoors in this region
 -- @field #list<#RegionSoundRef> sounds A read-only list of ambient sound references for this region.
 -- Each reference includes a chance and a resolved link to the full sound record.
--- @field #table weatherProbabilities A table mapping weather types to their probability (0–100), should sum to 100.
--- Supports both numeric indices (1–10) and string keys:
+-- @field #table weatherProbabilities A table mapping weather ids to their probability (0–100), should sum to 100.
+-- Supports both numeric indices (1–10) and ids, for example:
 --   `"clear"`, `"cloudy"`, `"foggy"`, `"overcast"`, `"rain"`, `"thunder"`, `"ash"`, `"blight"`, `"snow"`, `"blizzard"`
 -- @usage print(region.weatherProbabilities[1])         -- access by index
--- @usage print(region.weatherProbabilities["rain"])    -- access by name
+-- @usage print(region.weatherProbabilities["rain"])    -- access by id
 
 ---
 -- Region sound reference