There is often the question of whether the month is warmer, wetter, drier or colder than average. You often see presenters saying the weather is warmer or colder than average when actually this isn't the case. It also depends on which average they are using. Are they using the 1961 - 1990 average or the 1991 - 2020 average. The world standard is to use the 1961 - 1990 average however presenters often switch between the two giving an inconstant message. Recently for example a weather presenter was saying cold when doing the forecast however when the news presenter asked how much were the temperatures below average she the answer was just a little below average. Correct but they were using the 1991 - 2020 averages while the 1961 - 1990 the answer would have been a little above average. So presenters need to be a bit more careful when responding.
I've decided to provide the running average for temperatures and rainfall for the month so far and update this every five days. This will give a graphical view of the temperatures and rainfall so you can easily see when the temperatures are above or below average for the time of year. I've plotted the temperatures against both sets of averages i.e 1961 - 1990 average and the 1991 - 2020 average.
I moved these from the Stevenson page as I think a running average should have it's own page.
These pages have now been improved and now run back to 1998. You can now select between 1961-1990 average and the 1991- 2020 average. The charts have been moved from Excel to charts.js and are now displayed above the temperature table which also shows the anomaly. Each month now has it's relevant chart and table together.
| Sheffield Running Weather Averages Against the 1961 - 1990 mean and the 1991 - 2020 mean. | ||
|---|---|---|
| Rainfall 1961-1990 and 1991-2020 | Temperatures 1961-1990 and 1991-2020 | Seasonal Rainfall 1961-1990 and 1991-2020 |
| Daily rainfall compared to monthly average | Daily temperatures compared to monthly average | Seasonal rainfall compared to average |