Many of these summability methods easily assign to 1 â 2 + 3 â 4 + ... a sum of 1â4 after all. Cesaro cesÃ ro summation is one of the few methods that do not sum â 1 + 2 â 3 + ... 4
However, despite this fine climate, many people prefer to visit Tallinn during April or May, when the fresh, spring weather is especially enticing. April features average daytime temperatures of 9Â°C / 48Â°F, with highs of more than 15Â°C / 59Â°F when May arrives.
The annual average temperature in Estonia is between 4.3ÂºC and 6.5ÂºC, being lower on the uplands and higher on the western coast of the islands. The highest air temperature, 35.6ÂºC, was measured on 11 August 1992 in VÃµru, the lowest, â43.5ÂºC, on 17 January 1940 in JÃµgeva.