---
title: "monthlyStatistics(for:startMonth:endMonth:including:)"
framework: weatherkit
role: symbol
role_heading: Instance Method
path: "weatherkit/weatherservice/monthlystatistics(for:startmonth:endmonth:including:)"
---

# monthlyStatistics(for:startMonth:endMonth:including:)

Returns monthly weather statistics for the requested location, for each month from the start month to the end month, inclusively.

## Declaration

```swift
final func monthlyStatistics<each T>(for location: CLLocation, startMonth: Int, endMonth: Int, including dataSets: repeat MonthlyWeatherStatisticsQuery<each T>) async throws -> (repeat MonthlyWeatherStatistics<each T>) where repeat each T : Decodable, repeat each T : Encodable, repeat each T : Equatable, repeat each T : Sendable
```

## Parameters

- `location`: The requested location.
- `startMonth`: The first month of the span, between 1 and 12.
- `endMonth`: The last month of the span, between 1 and 12.

## Return Value

Return Value The requested monthly weather statistics.

## Discussion

Discussion note: Weather data error WeatherError The statistics returned for each month are derived from weather data recorded over the past decades, to the present date. Each item returned represents statistics for a particular Gregorian Calendar month of the year. This is a variadic API in which any combination of data sets can be requested and returned as a tuple. The following example will return statistics for all months of the year. let (monthlyPrecipitationStatistics, monthlyTemperatureStatistics) = try await service.monthlyStatistics(for: newYork, startMonth: 1, endMonth: 12, including: .precipitation, .temperature) If start comes after end in the year, then a wrap around will occur. This next example will return statistics for months 11, 12, 1, and 2. let (monthlyPrecipitationStatistics, monthlyTemperatureStatistics) = try await service.monthlyStatistics(for: newYork, startMonth: 11, endMonth: 2, including: .precipitation, .temperature) note: startMonth in 1...12 && endMonth in 1...12