Do you need to know, when is the best time to go to Grand-Est? Then you should take a look here, what weather you can expect there during the year.
Grand-Est is part of France. France is quite a large country, so the climate is diverse here. Most of the low-lying areas of France are in the oceanic climate zone, so you can generally expect cool winters and mild summers. But there are mild winters and hot summers along the Mediterranean. In most overseas regions of France you can expect a tropical climate.
When speaking about the usual weather in this area, the information is relevant for example for these popular places: Champagne, Colmar, Eguisheim, Husseren les Châteaux, Kaysersberg, Metz, Mulhouse, Nancy, Reims, Ribeauvillé, Riquewihr, Saint Dié des Vosges, Strasbourg, Sélestat, Troyes, Verdun, Vittel, Épernay, Épinal.
Let's look now what weather you can expect in the area around Strasbourg and in many other cities. The warmest month here is July, the average maximum temperature is 25.7 ℃ (78.26 ℉). The average minimum temperature in this month is 13.9 ℃ (57.02 ℉). The coldest month here is January, the average maximum temperature is 4.3 ℃ (39.74 ℉). The average minimum temperature in this month is -0.8 ℃ (30.56 ℉). The most rainy month here is May, the average number of rainy days is 11.3. The least rainy month here is February, the average number of rainy days is 7.8. 
When travelling around Grand-Est, always consider the altitude of the the place as well. We should remind you, that the highest point in France is Mont Blanc (4810 m) and the lowest point is Rhone River delta (-2 m). So there are huge differences in altitudes in this country and the weather is very different in them therefore. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)
Typical (usual) weather in Grand-Est in January is this: The average highest temperature in Grand-Est in January is 4.3 ℃ (39.74 ℉). The average lowest temperature is -0.8 ℃ (30.56 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 4.95 ℃ (40.91 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 5.3 ℃ (41.54 ℉). The average number of rainy days in January is 8.3. The average rainfall is 29.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 8:21 (hours and minutes), in the middle of the month 8:44 and at the end of the month 9:22.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in February is this: The average highest temperature in Grand-Est in February is 6.3 ℃ (43.34 ℉). The average lowest temperature is -0.5 ℃ (31.1 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 5.3 ℃ (41.54 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 8.9 ℃ (48.02 ℉). The average number of rainy days in February is 7.8. The average rainfall is 34.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:22 (hours and minutes), in the middle of the month 10:09 and at the end of the month 11:01.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in March is this: The average highest temperature in Grand-Est in March is 11.5 ℃ (52.7 ℉). The average lowest temperature is 2.4 ℃ (36.32 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 8.9 ℃ (48.02 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 13.2 ℃ (55.76 ℉). The average number of rainy days in March is 8.8. The average rainfall is 36.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:01 (hours and minutes), in the middle of the month 11:54 and at the end of the month 12:48.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Grand-Est in April is this: The average highest temperature in Grand-Est in April is 14.9 ℃ (58.82 ℉). The average lowest temperature is 4.8 ℃ (40.64 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 13.2 ℃ (55.76 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 17.35 ℃ (63.23 ℉). The average number of rainy days in April is 8.9. The average rainfall is 41.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:48 (hours and minutes), in the middle of the month 13:41 and at the end of the month 14:30.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in May is this: The average highest temperature in Grand-Est in May is 19.8 ℃ (67.64 ℉). The average lowest temperature is 9.3 ℃ (48.74 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 17.35 ℃ (63.23 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 21.1 ℃ (69.98 ℉). The average number of rainy days in May is 11.3. The average rainfall is 77.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:30 (hours and minutes), in the middle of the month 15:14 and at the end of the month 15:47.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in Grand-Est in June is this: The average highest temperature in Grand-Est in June is 22.4 ℃ (72.32 ℉). The average lowest temperature is 12.6 ℃ (54.68 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 21.1 ℃ (69.98 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 24.05 ℃ (75.29 ℉). The average number of rainy days in June is 11.3. The average rainfall is 75.5 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 15:47 (hours and minutes), in the middle of the month 16:06 and at the end of the month 16:05.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in July is this: The average highest temperature in Grand-Est in July is 25.7 ℃ (78.26 ℉). The average lowest temperature is 13.9 ℃ (57.02 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 24.05 ℃ (75.29 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 25.3 ℃ (77.54 ℉). The average number of rainy days in July is 9.8. The average rainfall is 66.3 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 16:05 (hours and minutes), in the middle of the month 15:46 and at the end of the month 15:12.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in August is this: The average highest temperature in Grand-Est in August is 24.9 ℃ (76.82 ℉). The average lowest temperature is 14 ℃ (57.2 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 25.3 ℃ (77.54 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 23.05 ℃ (73.49 ℉). The average number of rainy days in August is 9.6. The average rainfall is 58.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 15:12 (hours and minutes), in the middle of the month 14:28 and at the end of the month 13:39.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in September is this: The average highest temperature in Grand-Est in September is 21.2 ℃ (70.16 ℉). The average lowest temperature is 10.5 ℃ (50.9 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 23.05 ℃ (73.49 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 17.95 ℃ (64.31 ℉). The average number of rainy days in September is 8.7. The average rainfall is 63.3 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:39 (hours and minutes), in the middle of the month 12:47 and at the end of the month 11:54.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in October is this: The average highest temperature in Grand-Est in October is 14.7 ℃ (58.46 ℉). The average lowest temperature is 6.8 ℃ (44.24 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 17.95 ℃ (64.31 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 11.6 ℃ (52.88 ℉). The average number of rainy days in October is 9.3. The average rainfall is 53.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:54 (hours and minutes), in the middle of the month 11:01 and at the end of the month 10:10.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in November is this: The average highest temperature in Grand-Est in November is 8.5 ℃ (47.3 ℉). The average lowest temperature is 2.5 ℃ (36.5 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 11.6 ℃ (52.88 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 7.05 ℃ (44.69 ℉). The average number of rainy days in November is 9. The average rainfall is 48.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:10 (hours and minutes), in the middle of the month 9:24 and at the end of the month 8:45.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in Grand-Est in December is this: The average highest temperature in Grand-Est in December is 5.6 ℃ (42.08 ℉). The average lowest temperature is 0.5 ℃ (32.9 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 7.05 ℃ (44.69 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 4.95 ℃ (40.91 ℉). The average number of rainy days in December is 9.4. The average rainfall is 43.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 8:45 (hours and minutes), in the middle of the month 8:22 and at the end of the month 8:17.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.