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Weather vs Climate

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Weather vs Climate

A hardware store in Aotearoa New Zealand is preparing advice for customers. Read the briefing, then sort evidence, interpret the data and write a clear recommendation. Weather describes short-term atmospheric conditions; climate describes patterns and averages measured over a long period, commonly about 30 years.

Briefing: Two kinds of evidence

Tevita and Ana are helping customers prepare for changing conditions. The forecast says a strong southerly front may bring heavy rain to their town tomorrow. That is a weather forecast: it describes a short-term event. The store’s regional climate summary says the area usually has mild temperatures, with wetter winters than summers. It was calculated from many years of observations, not just one season. Climate information can help people plan what to build, grow or keep in stock, but it cannot tell them exactly what tomorrow will be like. A single storm does not, by itself, prove that the climate has changed.

A fictional town’s seasonal data

The values below are simplified teaching data for a fictional New Zealand town. They are average monthly rainfall totals (mm) from a 30-year climate record. They are not a forecast for this year.

Summer Dec–Feb 75 mm

Autumn Mar–May 95 mm

Winter Jun–Aug 140 mm

Spring Sep–Nov 105 mm

1.A customer asks whether tomorrow will be rainy. Which evidence is most useful for answering that question?

The short-range weather forecast
The town’s 30-year average winter rainfall
The name of the season

2.The forecast predicts a very windy afternoon. Is this mainly a statement about weather or climate? Explain your choice using the timescale.

3.Which statement is a climate description?

It is raining in town right now.
The region’s winters are usually wetter than its summers, based on decades of records.
A southerly is expected to arrive tonight.

4.Use the seasonal data to identify the wettest season and give its average rainfall. Then name the season with the lowest average rainfall.

5.A single winter has much less rain than usual. True or false: this one winter alone proves the town’s climate has become drier. Explain briefly.

6.Match each piece of information to its main category: weather or climate.

A. A heavy shower begins during lunchtime
B. A 30-year record shows summers are usually drier
C. Tomorrow’s forecast predicts a frost
D. A region’s typical annual temperature pattern

2. Climate
2. Climate
1. Weather
1. Weather

7.Tevita says, “If we know the climate, we can predict the exact weather on a particular day.” Is he correct? Write a correction.

8.The store is deciding whether to keep extra rainwater tanks in stock throughout winter. Use the seasonal data to make a recommendation and explain how climate information helps, while noting one limit of the data.

9.Complete the summary: Weather describes conditions; climate describes patterns measured over periods.