Begin a refactor of code to make it more reusable and get it out of main. Going to stop worrying about this for now though and just get the data formatted and presented well, then refactor once it's working correctly.

lib/helpers/http.dart

@@ -0,0 +1,45 @@
+// File for helper functions.
+
+import '/var/config.dart';
+import '/var/secrets.dart';
+import 'package:flutter/material.dart';
+import 'package:http/http.dart' as http;
+import 'dart:convert';
+
+// Generic method to hit a GET request and return the response.
+Future<String> hitAPI(String url) async {
+  if (debug) debugPrint(url);
+
+  http.Response response = await http.get(Uri.parse(url));
+
+  String data = "";
+  if (response.statusCode == 200) {
+    data = response.body;
+    var decodedData = jsonDecode(data);
+    if (debugVerbose) debugPrint(decodedData.toString());
+    data = decodedData.toString();
+  } else {
+    if (debug) debugPrint(response.statusCode.toString());
+  }
+
+  return data;
+}
+
+// How to guide: https://openweathermap.org/current#zip
+Future<String> hitOpenWeatherZip(String zipCode, String? countryCode) async {
+  countryCode ??= "US";
+
+  String url =
+      '$openWeatherAPI'
+      '?zip=$zipCode,$countryCode'
+      '&units=imperial'
+      '&appid=$openWeatherKey';
+
+  String data = await hitAPI(url);
+  return data;
+}
+
+// Convert the Future value into a usable value.
+loadWeather() async {
+  return await hitOpenWeatherZip("47630", "US");
+}

lib/helpers/json.dart

@@ -0,0 +1 @@
+// Functions related to parsing JSON strings and objects.

lib/main.dart

@@ -1,11 +1,10 @@
 // Local
 import '/var/secrets.dart';
-import 'var/config.dart';
+import '/var/config.dart';
+import 'helpers/http.dart';
 
 // Flutter / Dart
 import 'package:flutter/material.dart';
-import 'package:http/http.dart' as http;
-import 'dart:convert';
 
 void main() {
   runApp(const MainApp());
@@ -75,37 +74,7 @@ class _MainAppState extends State<MainApp> {
     );
   }
 
-  // How to guide:
+  // Call the
-  //   https://openweathermap.org/current#zip
-  Future<String> _hitOpenWeather(String zipCode, String? countryCode) async {
-    countryCode ??= "US";
-
-    String url =
-        'https://api.openweathermap.org/data/2.5/forecast'
-        '?zip=$zipCode,$countryCode'
-        '&units=imperial'
-        '&appid=$openWeatherKey';
-
-    if (debug) debugPrint(url);
-    http.Response response = await http.get(Uri.parse(url));
-
-    String data = "";
-    if (response.statusCode == 200) {
-      data = response.body;
-      var decodedData = jsonDecode(data);
-      //if (debug) debugPrint(decodedData.toString());
-      data = decodedData.toString();
-    } else {
-      if (debug) debugPrint(response.statusCode.toString());
-    }
-
-    return data;
-  }
-
-  _callOpenWeather() async {
-    weather = await _hitOpenWeather("47630", "US");
-  }
-
   _refreshWeather() {
     var lastReloadSeconds = DateTime.now().difference(lastLoadTime).inSeconds;
     if (debug) debugPrint("DEBUG: Refresh was $lastReloadSeconds seconds ago.");
@@ -118,7 +87,7 @@ class _MainAppState extends State<MainApp> {
     }
 
     weather = loadText;
-    _callOpenWeather();
+    weather = loadWeather();
     lastLoadTime = DateTime.now();
   }
 }

lib/var/config.EXAMPLE.dart

@@ -1,5 +1,15 @@
 // This file needs renamed `local.dart` when implemented.
 
+// Basic
 // Project-wide configuration variables for both testing and production.
-const bool debug = false;
+const bool debug = true;
+const bool debugVerbose = false;
 const int limitRefreshSeconds = 60;
+
+// OpenWeather Constants
+// Settings for how to use the OpenWeather API.
+const String openWeatherProtocol = "https://";
+const String openWeatherHost = "api.openweathermap.org";
+const String openWeatherURI = "/data/2.5/forecast";
+const String openWeatherAPI =
+    "$openWeatherProtocol$openWeatherHost$openWeatherURI";