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Climate chart Longmont

Jan.

max 36°F min 19°F

12

Feb.

max 41°F min 21°F

6

Mar.

max 50°F min 32°F

15

Apr.

max 64°F min 37°F

12

May.

max 72°F min 45°F

17

Jun.

max 86°F min 57°F

22

Jul.

max 93°F min 63°F

27

Aug.

max 93°F min 63°F

19

Sep.

max 86°F min 54°F

11

Oct.

max 66°F min 39°F

6

Nov.

max 46°F min 21°F

5

Dec.

max 43°F min 27°F

10

Weekly overview Longmont

Weather Longmont 14 days

Thursday 04-06-2026 Sunny/Clear 59°F / 81°F

Friday 05-06-2026 Sunny/Clear 68°F / 86°F

Saturday 06-06-2026 Sunny/Clear 70°F / 90°F

Sunday 07-06-2026 Moderate rain 63°F / 77°F

Monday 08-06-2026 Patchy rain possible 59°F / 73°F

Tuesday 09-06-2026 Sunny/Clear 63°F / 82°F

Wednesday 10-06-2026 Sunny/Clear 66°F / 81°F

Thursday 11-06-2026 Sunny/Clear 68°F / 79°F

Friday 12-06-2026 Patchy rain possible 64°F / 79°F

Saturday 13-06-2026 Sunny/Clear 70°F / 93°F

Sunday 14-06-2026 Sunny/Clear 75°F / 88°F

Monday 15-06-2026 Sunny/Clear 70°F / 86°F

Tuesday 16-06-2026 Patchy rain possible 70°F / 82°F

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