Yes, the current RegExp to get all the different types of "forecast" information, for one day (Day 1 or "today" in this case) for both "day" and "night" looks like this:
RegExp=(?siU)"getSunV3DailyForecastUrlConfig":.*"duration:15day;.*"dayOfWeek":\[(?:.*[,|\]]){0}(.*)[,|\]].*"narrative":\[(?:null,|".*"[,|\]]){0}(null|".*")[,|\]].*"qpf":\[(?:.*[,|\]]){0}(.*)[,|\]].*"qpfSnow":\[(?:.*[,|\]]){0}(.*)[,|\]].*"sunriseTimeLocal":\[(?:.*[,|\]]){0}(.*)[,|\]].*"sunsetTimeLocal":\[(?:.*[,|\]]){0}(.*)[,|\]].*"temperatureMax":\[(?:.*[,|\]]){0}(.*)[,|\]].*"temperatureMin":\[(?:.*[,|\]]){0}(.*)[,|\]].*"cloudCover":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"dayOrNight":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"daypartName":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"iconCode":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"narrative":\[(?:null,|".*"[,|\]]){0}(null|".*")[,|\]](null|".*")[,|\]].*"precipChance":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"precipType":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"qpf":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"qpfSnow":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"relativeHumidity":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"snowRange":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"temperature":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"temperatureHeatIndex":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"temperatureWindChill":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"thunderCategory":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"thunderIndex":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"uvDescription":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"uvIndex":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"windDirection":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"windDirectionCardinal":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"windPhrase":\[(?:null,|".*"[,|\]]){0}(null|".*")[,|\]](null|".*")[,|\]].*"windSpeed":\[(?:.*[,|\]]){0}(.*),(.*)[,|\]].*"wxPhraseLong":\[(?:null,|".*"[,|\]]){0}(null|".*")[,|\]](null|".*")[,|\]].*"wxPhraseShort":\[(?:null,|".*"[,|\]]){0}(null|".*")[,|\]](null|".*")[,|\]]
This is why you probably DON'T really want to parse the JSON yourself, but just use the .inc @Include files I provide. This is not a wheel most of you are likely to enjoy re-inventing...